Funny, I utilize Sony, Vegas Pro and I've done that. Of course it doesn't like AC 3 files even though it can create them. So I have to utilize some kind of workaround to get it into a format such as .wav/MPEG 2 through a third-party, or, is that fourth party converter. Then no problem. You might even need to cut that track to a DVD and then rip the DVD?
I really couldn't recommend any particular codec pack that hasn't already been installed? So go ahead and download QuickTime. You should have that anyhow.
Mx. Remy Ann David