Comment 3 for bug 383143

Same problem with me, amarok 2.1 and Kubuntu 9.04 with kde 4.3.0.

Please check your $HOME/.xsession-errors file (or start amarok from cmdline to see output).
I had (ffmpeg-flac decoder originated) warnings like:
---------------------------------------------------------------
[flac @ 0x7fe9b4003c70]invalid subframe padding
[flac @ 0x7fe9b4003c70]decode_frame() failed
[flac @ 0x7fe9b4003c70]FRAME HEADER not here
[flac @ 0x7fe9b4003c70]invalid subframe padding
[flac @ 0x7fe9b4003c70]decode_frame() failed
[flac @ 0x7fe9b4003c70]FRAME HEADER not here
[flac @ 0x7fe9b4003c70]qlevel -2 not supported, maybe buggy stream
[flac @ 0x7fe9b4003c70]decode_frame() failed
[flac @ 0x7fe9b4003c70]FRAME HEADER not here
[flac @ 0x7fe9b4003c70]invalid subframe padding
[flac @ 0x7fe9b4003c70]decode_frame() failed
[flac @ 0x7fe9b4003c70]FRAME HEADER not here
[flac @ 0x7fe9b4003c70]unsupported channel assignment 11 (channels=2)
[flac @ 0x7fe9b4003c70]decode_frame() failed
[flac @ 0x7fe9b4003c70]FRAME HEADER not here
[flac @ 0x7fe9b4003c70]invalid subframe padding
[flac @ 0x7fe9b4003c70]decode_frame() failed
[flac @ 0x7fe9b4003c70]FRAME HEADER not here
[flac @ 0x7fe9b4003c70]invalid subframe padding
[flac @ 0x7fe9b4003c70]decode_frame() failed
[flac @ 0x7fe9b4003c70]FRAME HEADER not here
KCrash: Application 'amarok' crashing...
---------------------------------------------------------

As Amarok uses libxine and at libxine maps flac decoding to ffmpeg module by default, my problems were caused by ffmpeg. This happend specially recently ripped (using k3b) flac files. One solution may be this:

http://bugs.xine-project.org/show_bug.cgi?id=196

However, I could not find mentioned xine-config file and removed whole libxine1-ffmpeg package which solved crashing. Now I'm missing mp3 playback but most of my music is flac anyway.