can't play songs from mtp device

[Wilfred]

Binary package hint: rhythmbox

Rhytmbox fails playing songs from my mtp device.

I can see the songs, add them to the play que, but when trying to play, an error is displayed:

"couldn't start playback
Problem occured without error being set. This is a bug in rhythembox or gstreamer."

when started Rhythembox throught terminal i see the message:

(rhythmbox:24432): Rhythmbox-CRITICAL **: rb_player_gst_play: assertion `mp->priv->playbin != NULL' failed

Hope this is sufficient info to have a look at this.

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/rhythmbox
Package: rhythmbox 0.11.6svn20081008-0ubuntu3
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: rhythmbox
Uname: Linux 2.6.27-7-generic i686

[Sebastien Bacher (seb128)]

Thanks for the bug report. This particular bug has already been reported, but feel free to report any other bugs you find.