No sound on Ubuntu 10.10 about mopidy HOT 4 CLOSED

jodal@kih:~/dev/mopidy:develop$ GST_DEBUG_NO_COLOR=1 GST_DEBUG=2 python mopidy
INFO     -- Starting Mopidy --
** Message: pygobject_register_sinkfunc is deprecated (GstObject)
INFO     Mopidy uses SPOTIFY(R) CORE
INFO     MPD server running at [::]:6600
INFO     Connected to Last.fm
INFO     Connected to Spotify
INFO     MPD client connection from [::ffff:127.0.0.1]:50627
INFO     MPD client connection from [::ffff:127.0.0.1]:50628
0:00:11.809145251 25861      0x3d2fea0 WARN           basetransform     gstbasetransform.c:2073:gst_base_transform_handle_buffer:<convert> error: not negotiated
0:00:11.809167877 25861      0x3d2fea0 WARN           basetransform gstbasetransform.c:2073:gst_base_transform_handle_buffer:<convert> error: not negotiated
0:00:11.809212061 25861      0x3d2fea0 WARN                 basesrc gstbasesrc.c:2550:gst_base_src_loop:<src> error: Internal data flow error.
0:00:11.809219210 25861      0x3d2fea0 WARN                 basesrc gstbasesrc.c:2550:gst_base_src_loop:<src> error: streaming task paused, reason not-negotiated (-4)
ERROR    Element doesn't implement handling of this stream. Please file a bug. gstbasetransform.c(2073): gst_base_transform_handle_buffer (): /GstPipeline:pipeline0/GstAudioConvert:convert:
not negotiated