I have some mp4 files where the audo is out of sync by about 30 ms. I can tweak my amplifier to compensate, but then it's off for other movies. is it possible to fix these files a …

I recently got a DVD player, the picture and sound are both fine, just not in sync. The picture goes straight from the player to the tv over component and the sound goes to my amp …

I have my music collection on iTunes on my laptop and main PC. When I make a change to one library I would like to be able to synchronise the change to the other library. Are there …