I have installed lubuntu-restricted-extras, but both programs crash after about 30 seconds when playing mp3's. I have tried on three vary different systems running lubuntu and the results are the same.

this is a log from banshee..

"exec -a banshee mono /usr/lib/banshee/Banshee.exe --redirect-log --play-enqueued

[Info 05:29:39.925] Running Banshee 2.6.0: [Ubuntu 12.10 (linux-gnu, x86_64) @ 2012-12-12 06:24:28 UTC]
[Info 05:29:40.827] Updating web proxy from GConf
[Warn 05:29:40.896] Caught an exception - System.ApplicationException: No support GNOME Settings Daemon could be reached. (in `Banshee.MultimediaKeys')
at Banshee.MultimediaKeys.MultimediaKeysService.Bansh ee.ServiceStack.IExtensionService.Initialize () [0x00000] in <filename unknown>:0
at Banshee.ServiceStack.ServiceManager.StartExtension (Mono.Addins.TypeExtensionNode node) [0x00000] in <filename unknown>:0
[Warn 05:29:40.896] Extension `Banshee.MultimediaKeys.MultimediaKeysService' not started: No support GNOME Settings Daemon could be reached.
[Warn 05:29:40.897] Caught an exception - System.ApplicationException: No support GNOME Settings Daemon could be reached. (in `Banshee.MultimediaKeys')
at Banshee.MultimediaKeys.MultimediaKeysService.Bansh ee.ServiceStack.IExtensionService.Initialize () [0x00000] in <filename unknown>:0
at Banshee.ServiceStack.ServiceManager.StartExtension (Mono.Addins.TypeExtensionNode node) [0x00000] in <filename unknown>:0
[Warn 05:29:40.897] Extension `Banshee.MultimediaKeys.MultimediaKeysService' not started: No support GNOME Settings Daemon could be reached.
[Info 05:29:40.898] All services are started 0.808738
[Info 05:29:41.262] AmazonMP3 store redirect URL: https://one.ubuntu.com/music/store/amz/
[Info 05:29:41.642] nereid Client Started
[Info 05:29:41.714] GStreamer version 0.10.36.0, gapless: True, replaygain: False

(Banshee:4674): GStreamer-CRITICAL **: gst_element_query: assertion `GST_IS_ELEMENT (element)' failed
(!) [ 4695: 0.000] --> Caught signal 24 (unknown origin) <--
(!) [ 4681: 0.000] --> Caught signal 24Stacktrace:

(unknown origin) <--
(!) [ 4693: 0.000] --> Caught signal 24 (unknown origin) <--"

thanks