GNOME Bugzilla – Bug 543270
Sound doesn't function under Virtual Box version 1.6.2
Last modified: 2008-10-04 23:18:17 UTC
Message from System->Preferences->Sound->Devices->Sound Events->Test: audiotestsrc wave=sine freq=512 ! audioconvert ! audioresample ! gconfaudiosink: Internal GStreamer error: state change failed. Please file a bug at http://bugzilla.gnome.org/enter_bug.cgi?product=GStreamer
I'm using GStreamer under virtualbox 1.6.2 just fine. I think this is more likely that your sound is not configured correctly. What options do you have in the drop-down list next to the 'Test' button? Perhaps you need more packages installed.
Closing this bug, as vbox audio works well for me and no further information has been provided. Please reopen if you have more details.