I created an xvcd at 1800 kbps using TMPG, burned using Nero. The disk plays fine and looks good. However, the longer it plays, the further out of synch the audio becomes. On a 20 minute segment it gets 3-4 seconds off. If I fast forward into the same spot on the vcd, the sound is synched up fine. Also checked the vcd on my pc - no problems. I think the source MPEG file is good. Any thoughts what's going on here?