I have organized a playlist containing all of my favorite music in Amarok, but when I try to play it, it won't cooperate. By running `amarok --debug --nofork` and clicking play, I get this output in the terminal:

Code: Select all

amarok: BEGIN: void EngineController::playPause()
amarok:   [EngineController] PlayPause: EngineController state  Phonon::StoppedState 
amarok:   BEGIN: void EngineController::play()
amarok:     BEGIN: void Playlist::Actions::play()
amarok:       BEGIN: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance()
amarok:         BEGIN: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance()
amarok:         END__: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance() [Took: 0s]
amarok:       END__: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance() [Took: 0s]
amarok:       BEGIN: Playlist::ItemList* Playlist::NonlinearTrackNavigator::nextItemChooseDonorList()
amarok:         BEGIN: virtual void Playlist::RandomTrackNavigator::planOne()
amarok:           BEGIN: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance()
amarok:           END__: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance() [Took: 0s]
amarok:           BEGIN: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance()
amarok:           END__: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance() [Took: 0.001s]
amarok:           BEGIN: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance()
amarok:           END__: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance() [Took: 0s]
amarok:           BEGIN: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance()
amarok:           END__: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance() [Took: 0s]
amarok:           BEGIN: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance()
amarok:           END__: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance() [Took: 0s]
amarok:           BEGIN: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance()
amarok:           END__: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance() [Took: 0s]
amarok:         END__: virtual void Playlist::RandomTrackNavigator::planOne() [Took: 0.002s]
amarok:       END__: Playlist::ItemList* Playlist::NonlinearTrackNavigator::nextItemChooseDonorList() [Took: 0.002s]
amarok:       BEGIN: virtual void Playlist::NonlinearTrackNavigator::setCurrentItem(quint64, bool)
amarok:         BEGIN: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance()
amarok:         END__: void Playlist::NonlinearTrackNavigator::doItemListsMaintenance() [Took: 0s]
amarok:       END__: virtual void Playlist::NonlinearTrackNavigator::setCurrentItem(quint64, bool) [Took: 0s]
amarok:       BEGIN: void Playlist::Actions::play(quint64, bool)
amarok:         BEGIN: void EngineController::play(Meta::TrackPtr, uint, bool)
amarok:           BEGIN: void EngineController::stop(bool, bool)
amarok:           END__: void EngineController::stop(bool, bool) [Took: 0s]
amarok:           [EngineController] play: bounded is  QObject(0x0)  current "Life In A Northern Town"
amarok:           [EngineController] Just a normal, boring track... :-P
amarok:           BEGIN: void EngineController::playUrl(const KUrl&, uint, bool)
amarok:             [EngineController] URL:  KUrl("file:///mnt/Storage/Users/Brandon/Music/The Dream Academy/The Dream Academy/01 Life In A Northern Town.mp3") "file:///mnt/Storage/Users/Brandon/Music/The%20Dream%20Academy/The%20Dream%20Academy/01%20Life%20In%20A%20Northern%20Town.mp3"
amarok:             [EngineController] Offset:  0
amarok:           END__: void EngineController::playUrl(const KUrl&, uint, bool) [Took: 0.013s]
amarok:         END__: void EngineController::play(Meta::TrackPtr, uint, bool) [Took: 0.014s]
amarok:       END__: void Playlist::Actions::play(quint64, bool) [Took: 0.014s]
amarok:     END__: void Playlist::Actions::play() [Took: 0.018s]
amarok:   END__: void EngineController::play() [Took: 0.018s]
amarok: END__: void EngineController::playPause() [Took: 0.018s]

My music does play fine in other media players such as Clementine, so I'm suspecting a bug in Amarok. What do you guys make of all this?

How about giving a tad more information about your system. You can find all the relevant information in the Amarok Help menu -> Diagnostics.

And, of course, please also specify your Distribution and KDE SC release version.

Here's the Diagnostics information as reported by Amarok:

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Amarok Diagnostics

Amarok Version: 2.8.0
KDE Version: 4.14.0
Qt Version: 4.8.6
Phonon Version: 4.8.0
Phonon Backend: GStreamer (4.8.0)
PulseAudio: Yes

Amarok Scripts:
    Amarok Script Console 1.0 (stopped)
Lyricwiki .2 (running)
Free Music Charts 1.6.0 (running)
Librivox.org 1.0 (running)
Cool Streams 1.0 (running)

Amarok Plugins:
    AudioCd Collection (enabled)
DAAP Collection (disabled)
MTP Collection (enabled)
MySQLServer Collection (enabled)
MySQLe Collection (enabled)
UPnP Collection (disabled)
Universal Mass Storage Collection (enabled)
iPod, iPad & iPhone Collection (enabled)
Ampache (disabled)
Jamendo (enabled)
Last.fm (enabled)
MP3 Music Store (enabled)
MP3tunes (disabled)
Magnatune Store (enabled)
Podcast Directory (enabled)
gpodder.net (disabled)

I'm running Manjaro 0.8.10, codenamed "Ascella," 64-bit edition. It might help you to know that Manjaro is based on Arch Linux.

I presume that something went wrong with the gstreamer dependency, please install the phonon-backend-vlc change the phonon backend to see if it plays.
FWIW: do not compare Amarok with Clementine,as Clementine doesn't use Phonon to play, but gstreamer directly. What would be comparable is Dragonplayer.

The VLC backend ("sudo pacman -S phonon-qt4-vlc") doesn't seem to have made any difference.

did you restart plasma?

Okay, after restarting Plasma and Amarok, playback now seems to work fine, but the equalizer and ReplayGain seem to have been disabled. Is this possible to fix?

the equalizer doesn't work with the VLC backend, if you want it to work I would suggest trying to right your gStreamer install

also you don't state whether Amarok ever played your mp3 previously with gStreamer, and if so if there was an change to your system that might have caused the issue

note: iirc equalizer support will occur in when VLC 2.2.x ships

No. Amarok doesn't seem to want to play the music files with the GStreamer backend installed.

settings -> configure Amarok -> playback -> configure Phonon -> backened -> use prefer/defer to select which is to be used
note: also can be done in systemsettings

So it is indeed a problem of the phonon-backend-gstreamer. You should file a bug in your distribution, they probably didn't compile it properly, especially against the right libraries (including QtWebkit and ONLY gstreamer 1.x). FWIW: that same backend works fine in Kubuntu Utopic beta

@google01103: the gstreamer backend doesn't work for him, not the first mention I have of it not working and it usually is a packaging issue.