OK, here's the prob, after a lot of advice from here, I finally got a DVD encoded, authored and burned - but no sound!

Scenario: I downloaded a two-part DivX file (Triple-X, Vin Diesel). Each part played a treat! Joined the two using VirtualDub, lost some of the sound later in the film, so I exported the soundtrack using the 'Save WAV' command - scanned through the resulting 400+ Mb wav file - all OK.

Re-Encoded the DivX file WAV file using TMPGEnc, got a 3.5GB MPEG2 file. Used Ulead DVD to set up scene selection (worked OK), authored the DVD and burned it.

Put it in the DVD player, scene selection works OK, picture OK, sound disappears after 20 minutes and using 'Next' to skip through scene selection makes the film appear to jump and halt repeatedly. Same happens in PowerDVD on the PC.

Just what am I doing wrong here? Anyone, PLEASE!!!!!