Thanks so the problem is that ALSA or the gst alsa sink doesn't detect the capabilities of your hardware correctly as it's only able to play sound sampled at 48000khz... I'll get this reported upstream :)
-- gstreamer10 is unable to output sound using alsa on an ibm thinkpad t43 https://launchpad.net/bugs/42881 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
