hmm did the sound match on the video file when you played on the computer? The codecs within Toast 7 might be getting a little old if the video file had been converted using a newer version of codec than Toast 7 possesses. Alternatively, if it was pal or ntsc & you were converting from that format over to the other, it is something that can happen. Toast is now up to version 9 btw, though I think they jumped between versions fairly quickly in last few years. Check for updates for version 7 at the Roxio site, there may be an update that also updates some of the codecs within the program.