16.04アップグレード後、クレメンタインはm4aを再生しなくなりました
システムが14.04のときにこの問題が発生し、 this で修正されました。
システムを16.04にアップグレードしましたが、クレメンタインが見つからなかったため、インストールしました。 m4aファイルを再生できなかったため、古いソリューションを見つけて試してみました。しかし、それでもm4aを再生できません。
それから今、私は開発バージョンのクレメンタインにアップグレードしてみました（もう1つの答え）が、それでも運はありません。 gstreamerエラーが発生し続けます。
16.04でm4aファイルを機能させるにはどうすればよいですか？
m4aを再生するクレメンタインを含むシステムの14.04クローンがあります。
編集：
apt-cache search gstreamer.*bad
gir1.2-gst-plugins-bad-1.0 - GObject introspection data for the GStreamer libraries from the "bad" set
gnome-video-effects-extra - GNOME Video Effects - extra plugins
gstreamer1.0-plugins-bad - GStreamer plugins from the "bad" set
gstreamer1.0-plugins-bad-dbg - GStreamer plugins from the "bad" set (debug symbols)
gstreamer1.0-plugins-bad-doc - GStreamer documentation for plugins from the "bad" set
gstreamer1.0-plugins-bad-faad - GStreamer faad plugin from the "bad" set
gstreamer1.0-plugins-bad-videoparsers - GStreamer videoparsers plugin from the "bad" set
libgstreamer-plugins-bad1.0-0 - GStreamer development files for libraries from the "bad" set
libgstreamer-plugins-bad1.0-dev - GStreamer development files for libraries from the "bad" set
sound-juicer - GNOME CD Ripper
gstreamer0.10-plugins-bad-multiverse - GStreamer plugins from the "bad" set (Multiverse Variant)
gstreamer0.10-plugins-bad - GStreamer plugins from the "bad" set
libgstreamer-plugins-bad0.10-0 - GStreamer shared libraries from the "bad" set
N: Ignoring file '50unattended-upgrades.ucf-old' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension
Sudo find ~/ -mount -name \*gstreamer\*
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/installed/libgstreamer0.10-0_0.10.36-1ubuntu1+srt5_AMD64
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/installed/libgstreamer0.10-0_0.10.36-1ubuntu1+srt5_AMD64.md5
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/installed/libgstreamer-plugins-base0.10-0_0.10.36-1ubuntu0.1+srt5_AMD64
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/installed/libgstreamer-plugins-base0.10-0_0.10.36-1ubuntu0.1+srt5_AMD64.md5
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/af/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/fi/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/lt/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/el/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/bg/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/sk/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/nl/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/eo/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/id/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/rw/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/az/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/tr/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/zh_CN/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/es/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/en_GB/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/de/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/ro/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/cs/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/uk/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/hu/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/eu/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/ca/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/it/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/be/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/sr/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/gl/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/fr/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/ru/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/sq/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/da/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/pl/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/vi/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/zh_TW/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/sv/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/ja/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/pt_BR/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/nb/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/locale/sl/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/doc/libgstreamer0.10-0
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/share/doc/libgstreamer-plugins-base0.10-0
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/lib/x86_64-linux-gnu/libgstreamer-0.10.so.0
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/lib/x86_64-linux-gnu/libgstreamer-0.10.so.0.30.0
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/lib/x86_64-linux-gnu/gstreamer-0.10
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/lib/x86_64-linux-gnu/gstreamer0.10
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/AMD64/usr/lib/x86_64-linux-gnu/gstreamer0.10/gstreamer-0.10
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/installed/libgstreamer0.10-0_0.10.36-1ubuntu1+srt5_i386.md5
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/installed/libgstreamer0.10-0_0.10.36-1ubuntu1+srt5_i386
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/installed/libgstreamer-plugins-base0.10-0_0.10.36-1ubuntu0.1+srt5_i386.md5
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/installed/libgstreamer-plugins-base0.10-0_0.10.36-1ubuntu0.1+srt5_i386
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/af/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/fi/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/lt/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/el/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/bg/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/sk/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/nl/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/eo/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/id/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/rw/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/az/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/tr/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/zh_CN/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/es/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/en_GB/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/de/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/ro/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/cs/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/uk/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/hu/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/eu/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/ca/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/it/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/be/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/sr/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/gl/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/fr/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/ru/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/sq/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/da/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/pl/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/vi/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/zh_TW/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/sv/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/ja/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/pt_BR/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/nb/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/locale/sl/LC_MESSAGES/gstreamer-0.10.mo
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/doc/libgstreamer0.10-0
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/share/doc/libgstreamer-plugins-base0.10-0
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/lib/i386-linux-gnu/libgstreamer-0.10.so.0
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/lib/i386-linux-gnu/libgstreamer-0.10.so.0.30.0
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/lib/i386-linux-gnu/gstreamer-0.10
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/lib/i386-linux-gnu/gstreamer0.10
/home/mina/.local/share/Steam/ubuntu12_32/Steam-runtime/i386/usr/lib/i386-linux-gnu/gstreamer0.10/gstreamer-0.10
/home/mina/.local/share/gstreamer-1.0
/home/mina/.wine/drive_c/windows/system32/winegstreamer.dll
/home/mina/.wine/drive_c/windows/syswow64/winegstreamer.dll
/home/mina/.cache/gstreamer-1.0
/home/mina/.cache/software-center/icons/gstreamer0.10-fluendo-plugins-icon-gstreamer0.10-fluendo-plugins.png
/home/mina/.cache/software-center/icons/gstreamer0.10-fluendo-plugins-wmv-icon-gstreamer0.10-fluendo-plugins-wmv.png
はどうかと言うと apt list --installedここに paste があります。これまでで最大の出力の1つX）
注：私のシステムが混乱していると思うなら、はい（残念ながら）知っています。
Edit 2：ターミナルでClementineを実行しました。スタートアップ出力の一部は次のとおりです。
04:12:14.255 INFO main:329 Clementine 1.3.1-284-g8a6cc8b
04:12:14.419 DEBUG NetworkProxyFactory:49 Detected system proxy URLs: ("", "", "", "")
04:12:14.421 DEBUG WorkerPool<HandlerType>:281 Starting worker 0x7fedb79fa660 "/usr/bin/clementine-tagreader" "/tmp/clementine_536547441"
04:12:14.423 DEBUG WorkerPool<HandlerType>:281 Starting worker 0x7fedb79fa660 "/usr/bin/clementine-tagreader" "/tmp/clementine_1160234507"
04:12:14.425 DEBUG WorkerPool<HandlerType>:281 Starting worker 0x7fedb79fa660 "/usr/bin/clementine-tagreader" "/tmp/clementine_498140324"
04:12:14.428 DEBUG WorkerPool<HandlerType>:281 Starting worker 0x7fedb79fa660 "/usr/bin/clementine-tagreader" "/tmp/clementine_2096635439"
04:12:14.430 DEBUG WorkerPool<HandlerType>:281 Starting worker 0x7fedb79fa660 "/usr/bin/clementine-tagreader" "/tmp/clementine_878615057"
04:12:14.432 INFO main:48 TagReader worker connecting to "/tmp/clementine_536547441"
04:12:14.433 DEBUG WorkerPool<HandlerType>:281 Starting worker 0x7fedb79fa660 "/usr/bin/clementine-tagreader" "/tmp/clementine_1273687375"
04:12:14.434 DEBUG WorkerPool<HandlerType>:281 Starting worker 0x7fedb79fa660 "/usr/bin/clementine-tagreader" "/tmp/clementine_546149030"
04:12:14.437 DEBUG WorkerPool<HandlerType>:281 Starting worker 0x7fedb79fa660 "/usr/bin/clementine-tagreader" "/tmp/clementine_884135863"
04:12:14.438 INFO main:48 TagReader worker connecting to "/tmp/clementine_2096635439"
04:12:14.438 INFO main:48 TagReader worker connecting to "/tmp/clementine_1160234507"
04:12:14.438 INFO main:48 TagReader worker connecting to "/tmp/clementine_498140324"
04:12:14.440 DEBUG WorkerPool<HandlerType>:301 Worker 0x7feda800c540 connected to "/tmp/clementine_536547441"
04:12:14.440 DEBUG WorkerPool<HandlerType>:301 Worker 0x7feda800daf0 connected to "/tmp/clementine_1160234507"
04:12:14.440 DEBUG WorkerPool<HandlerType>:301 Worker 0x7feda800c5c0 connected to "/tmp/clementine_498140324"
04:12:14.440 DEBUG WorkerPool<HandlerType>:301 Worker 0x7feda8010420 connected to "/tmp/clementine_2096635439"
04:12:14.441 INFO main:48 TagReader worker connecting to "/tmp/clementine_878615057"
04:12:14.441 DEBUG WorkerPool<HandlerType>:301 Worker 0x7feda8011a00 connected to "/tmp/clementine_878615057"
04:12:14.446 INFO main:48 TagReader worker connecting to "/tmp/clementine_1273687375"
04:12:14.446 DEBUG WorkerPool<HandlerType>:301 Worker 0x7feda800ec80 connected to "/tmp/clementine_1273687375"
04:12:14.446 INFO main:48 TagReader worker connecting to "/tmp/clementine_546149030"
04:12:14.447 DEBUG WorkerPool<HandlerType>:301 Worker 0x7feda80145b0 connected to "/tmp/clementine_546149030"
04:12:14.453 INFO main:48 TagReader worker connecting to "/tmp/clementine_884135863"
04:12:14.453 DEBUG WorkerPool<HandlerType>:301 Worker 0x7feda8012520 connected to "/tmp/clementine_884135863"
04:12:14.490 DEBUG GnomeGlobalShortcutBackend:52 registering
04:12:14.610 DEBUG MainWindow:226 Starting
04:12:14.633 WARN unknown QPainter::begin: Paint device returned engine == 0, type: 2
04:12:14.666 DEBUG CoverProviders:35 Registered cover provider "Amazon"
04:12:14.667 DEBUG CoverProviders:35 Registered cover provider "MusicBrainz"
04:12:14.667 DEBUG CoverProviders:35 Registered cover provider "last.fm"
04:12:14.677 DEBUG MainWindow:297 Initialising player
04:12:14.686 DEBUG MainWindow:303 Creating models
04:12:14.703 INFO Player:627 Registered URL handler for "classicalradio"
04:12:14.703 DEBUG InternetModel:131 Adding internet service: "ClassicalRadio"
04:12:14.704 INFO Player:627 Registered URL handler for "di"
04:12:14.704 DEBUG InternetModel:131 Adding internet service: "DigitallyImported"
04:12:14.717 DEBUG InternetModel:131 Adding internet service: "Icecast"
04:12:14.722 DEBUG InternetModel:131 Adding internet service: "Jamendo"
04:12:14.727 INFO Player:627 Registered URL handler for "jazzradio"
04:12:14.727 DEBUG InternetModel:131 Adding internet service: "JazzRadio"
04:12:14.728 INFO Player:627 Registered URL handler for "magnatune"
04:12:14.732 DEBUG InternetModel:131 Adding internet service: "Magnatune"
04:12:14.737 DEBUG InternetModel:131 Adding internet service: "Podcasts"
04:12:14.741 INFO Player:627 Registered URL handler for "rockradio"
04:12:14.741 DEBUG InternetModel:131 Adding internet service: "RockRadio"
04:12:14.745 DEBUG InternetModel:131 Adding internet service: "SavedRadio"
04:12:14.749 INFO Player:627 Registered URL handler for "radiotunes"
04:12:14.749 DEBUG InternetModel:131 Adding internet service: "RadioTunes"
04:12:14.753 INFO Player:627 Registered URL handler for "somafm"
04:12:14.753 DEBUG InternetModel:131 Adding internet service: "SomaFM"
04:12:14.757 INFO Player:627 Registered URL handler for "intergalacticfm"
04:12:14.757 DEBUG InternetModel:131 Adding internet service: "Intergalactic FM"
04:12:14.765 DEBUG InternetModel:131 Adding internet service: "SoundCloud"
04:12:14.766 DEBUG SpotifyService:108 Spotify system blob path: "/usr/bin/clementine-spotifyblob"
04:12:14.766 DEBUG SpotifyService:109 Spotify local blob path: "/home/mina/.config/Clementine/spotifyblob/version16-64bit/blob"
04:12:14.770 DEBUG InternetModel:131 Adding internet service: "Spotify"
04:12:14.770 INFO Player:627 Registered URL handler for "subsonic"
04:12:14.792 DEBUG InternetModel:131 Adding internet service: "Subsonic"
04:12:14.815 INFO Player:627 Registered URL handler for "box"
04:12:14.815 DEBUG InternetModel:131 Adding internet service: "Box"
04:12:14.819 INFO Player:627 Registered URL handler for "dropbox"
04:12:14.819 DEBUG InternetModel:131 Adding internet service: "Dropbox"
04:12:14.823 INFO Player:627 Registered URL handler for "googledrive"
04:12:14.823 DEBUG InternetModel:131 Adding internet service: "Google Drive"
04:12:14.827 INFO Player:627 Registered URL handler for "seafile"
04:12:14.827 DEBUG InternetModel:131 Adding internet service: "Seafile"
04:12:14.831 INFO Player:627 Registered URL handler for "skydrive"
04:12:14.831 DEBUG InternetModel:131 Adding internet service: "OneDrive"
04:12:14.834 WARN DeviceKitLister:55 Error enumerating DeviceKit-disks devices: "org.freedesktop.DBus.Error.ServiceUnknown" "The name org.freedesktop.UDisks was not provided by any .service files"
04:12:14.837 DEBUG MainWindow:322 Creating UI
04:12:14.889 DEBUG MainWindow:867 Creating equalizer
04:12:14.891 DEBUG MainWindow:896 Creating now playing widget
04:12:14.915 DEBUG _MessageReplyBase:24 Waiting on ID 0
...その後、ファイルをスキャンし続けます。
M4aファイルを実行しようとすると、ここに出力があります
04:12:57.114 DEBUG PlaylistBackend:294 Saving playlist 196
04:12:57.123 DEBUG PlaylistBackend:294 Saving playlist 46
04:12:57.126 DEBUG {anonymous}:42 QDBusError("", "")
04:12:57.362 DEBUG GnomeGlobalShortcutBackend:96 registered
04:12:57.435 DEBUG {anonymous}:78 Remote interface published on Avahi: QDBusError("", "")
04:13:42.355 DEBUG Database:584 Starting database integrity check
04:13:42.357 DEBUG Database:645 Starting database backup
04:13:54.113 DEBUG _MessageReplyBase:24 Waiting on ID 406
04:13:54.113 DEBUG TagReader:984 Loading art from "/path/bla/bla/name.m4a"
04:13:54.114 INFO MoodbarLoader:147 Creating moodbar data for "/path/bla/bla/name.m4a"
04:13:54.115 DEBUG MessageReply<MessageType>:90 Releasing ID 406 (finished)
04:13:54.115 DEBUG _MessageReplyBase:26 Acquired ID 406
04:13:54.115 DEBUG PlaylistBackend:294 Saving playlist 183
04:13:54.129 ERROR MoodbarPipeline:133 Error processing QUrl( "file:///path/bla/bla/name.m4a" ) : "Your GStreamer installation is missing a plug-in."
04:13:54.129 ERROR MoodbarPipeline:133 Error processing QUrl( "file:///path/bla/bla/name.m4a" ) : "GStreamer encountered a general stream error."
04:13:54.138 ERROR GstEnginePipeline:645 1 "gsturidecodebin.c(1006): no_more_pads_full (): /GstPipeline:pipeline/GstURIDecodeBin:uridecodebin-0:
no suitable plugins found:
gstdecodebin2.c(4565): gst_decode_bin_expose (): /GstPipeline:pipeline/GstURIDecodeBin:uridecodebin-0/GstDecodeBin:decodebin1:
no suitable plugins found:
Missing decoder: Apple Lossless Audio (ALAC) (audio/x-alac, codec_data=(buffer)00000024616c616300000000000010000010280a0e0200ff00002f5a000bcdeb0000ac44, samplesize=(int)16, max-input-size=(int)12142, rate=(int)44100, channels=(int)2)
"
04:13:54.138 ERROR GstEnginePipeline:645 1 "qtdemux.c(5520): gst_qtdemux_loop (): /GstPipeline:pipeline/GstURIDecodeBin:uridecodebin-0/GstDecodeBin:decodebin1/GstQTDemux:qtdemux1:
streaming stopped, reason not-linked"
04:13:54.165 DEBUG MainWindow:1484 position 0 scrobble point 187 status 0
04:14:03.325 WARN GstEngine:693 Gstreamer error: "Your GStreamer installation is missing a plug-in."
04:14:03.325 ERROR logging:56 Source ID 69 was not found when attempting to remove it
04:14:03.327 WARN unknown QTimeLine::start: already running
04:14:12.458 WARN unknown QTimeLine::start: already running
04:14:21.731 WARN OSD:140 Error sending notification "org.freedesktop.DBus.Error.NoReply"
編集3：
apt-cache search gstreamer0.10-plugins-bad
gstreamer0.10-plugins-bad-multiverse - GStreamer plugins from the "bad" set (Multiverse Variant)
gstreamer0.10-plugins-bad - GStreamer plugins from the "bad" set
N: Ignoring file '50unattended-upgrades.ucf-old' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension
.m4aがgstreamer1.0-libavによってデコードされるalacであると推測してみましょう。
16.04でプラグインが壊れていることを報告しました。修正は行われましたが、まだリリースされていません。 -proposedリポジトリから新しいパッケージを取得するか、メインリポジトリを作成するまで少し待つことができます。
参照用のバグ- https://bugs.launchpad.net/ubuntu/+source/gst-libav1.0/+bug/1661842
新しいパッケージのバージョンは1.8.3-1ubuntu0.2です。更新後、クレメンタインが開いている場合は閉じてから、新しいプラグインを使用するために再度開く必要があります。
投稿したリンク（ご存知のとおり）は、gstreamerの古いバージョン用です。
デフォルトのリポジトリを使用すると、Ubuntuバージョンのアップグレード後も生き残る可能性が高くなります。
完全に更新されたgstreamerパッケージをインストールする必要があります。
$ Sudo apt install gstreamer1.0-plugins-bad
〜/ .local/share/Steamを削除して、以前にインストールしたキャッシュバージョンを削除します。
（Valveの）Steamゲーマーへの注意、おそらくこのフォルダーを削除したくないでしょう。Steamにはすべての設定があります。Steamライブラリを再配置する必要があるかもしれません。
削除するコマンド：
$ rm ~/.local/share/Steam
変更を有効にするには、クレメンタインを終了する必要がある場合があります。