I have an unusual SVCD playback problem that I can't resolve.

I put a number of short clips on one CD (together with an iniital menu). All the video clips played back perfectly on my standalone player (Reoc A5) and with WinDVD.

I sent the disc to some family to watch. When they viewed the disc on a Pioneer standalone only the first video had any audio. They also tried a Philips player with similar results.

I had authored the disc with Ulead's DVD Workshop so I sent them another disc but this time I used TSCV. Same problem.

What could be the problem? Any Ideas?