Please help!

I downloaded Serendipity and split it into 2 parts with vdub. then extracted .wav w/ vdub.

I encoded (TMPGENC) part 1 and it came out fine... but part 2, the sound is out of sync, not sure why I did everything the same as part 1.

I used kwag's (2 cd) template and changed cq: 80 min: 500

Can anyone help please?