Hi there, Incase there's any newbies out there who are getting a "bad format file" error message in DVD Studio Pro 1.5, I have the answer!! It's a little app called "MPEG Append". Basically, if you take your mv2 file into DVD SP and it gives you this message fear not! Drop your m2v file icon onto MPEG Append's icon and it resaves it for you. I don't know what it does but once it has finished re-saving you can take it into DVD SP and the file will now work! Cool eh?! By the way, can't remember where I got MPEG Append but search for it through Google and you'll get it.