I have many quicktime files that I've been given to edit, I drag them into Vegas and the video plays back fine but the audio is totally out of sync and sometimes not even there. Additionally sometimes it works ok, other times it just emits a loud tone, it just depends on what part of the file I play back. I tried the same files in Premiere Pro 5 on the same machine and they all work totally fine there. Any clues as to why this would be the case? I don't know much about the files aside from the fact that they are mov files and I was told they were quicktime, it's just weird that on my same machine they work perfect in Premiere Pro 5 but don't work right in Vegas Pro 10.0d. Any ideas would be greatly appreciated as I need to finish these projects in Vegas but I'm dead in the water until I can figure out this audio issue. Oh yeah there is only one audio stream in each file in case that matters. Thanks!

EDIT: I did some more sleuthing in case it helps, I went here:

http://support.apple.com/downloads/#quicktime

...and tried all these versions of quicktike:

7.6.9
7.6
7.5.5
7.5
7.4.5
7.4.1
7.4
7.3.1
7.2
7.1.6

I stopped at 7.1.6 because Vegas says that's the minimum required version. In all cases Vegas 10.0d will not play audio correctly with any of the quicktime versions. I'm pretty sure it's not a quicktiem issue or an issue with the files since PP5 and the Quicktime Player plays them all perfectly, it's just Vegas that can't figure out the audio on them. If anyone has suggestions to fix this they would be greatly appreciated.