I found this little blurb for syncing the audio in Sony Vegas with Video....
the easy way is with vegas i think
put the movie on the time line and drop all the waves on the time line in thier respective channel spots ...
group all wav files together ..
hit control and drag the end of the audio so it matchs lenth of video .
fine tune and adjust as needed (turn off frame quantization for this)
save out new wavs , select render to mono wav (will save and auto name each channel)