The file is working fine for me... Do you really have gstreamer0.10-ffmpeg, gstreamer0.10-plugins-bad and gstreamer0.10-plugins-bad-multiverse installed? What's the output of gst-inspect-0.10 faad gst-inspect-0.10 ffdec_mpeg40 ? -- Edgy: no audio for mp4 files https://launchpad.net/bugs/71689