When using GStreamer for playback, Amarok always crashes when I try to play the files. I don't have this problem using Arts.

You probably need to run gst-register-0.8.

Nope - I ran gst-register-0.8 and amarok still crashes. I'm on x86-64, so it could be a 64bit issue though.
Playing works with arts and xine-engine, though arts is very buggy on amd64 (It hogs the cpu when using just _any_ effect like reverb, hogs the cpu when using other kde-sound-apps etc..)

have the same problem with kde3.3 xine output works ok. Using gstreamer crashes amarok.

1. run amarok from console
2. load a file
3. hit play

GStreamer-WARNING **: element thread1 claimed state-change success,but state didn't change to PLAYING. State is PAUSED (NONE_PENDING pending), fix the element

using gstreamer 0.8.5
gstreamer-plugins 0.8.4
any ideas?

ok resolved!
downloaded all gstreamer packages from freshrpms.net
(using apt-get if you have the correct repositories setup then apt-get install gstreamer* , this installed also totem but who cares:))
(gstreamer, gstreamer-devel, gstreamer-plugins, gstreamer-extra, gstreamer-mp3)
updated libfame
run gst-register-0.8 afterwards
WORKS!
dunno which one helped but it works now.

Feature request:
"managing" files in collection
(1. delete, copy etc.)
2. move files between folders updates corresponding ID3tags
(this would be superb!)
Thanks for help
(check out #amarok through not very helpful, they will tell you atleast if your problem is amarok related:)