Im having an issue with my DVD burner. I'm trying to make a DVD with some WMA files I have on my harddrive but when I try & burn the DVD, it gets 2% into the process and runs for about 20 mins then it comes up as an unknown error. I was kind of thinking it was a harddrive issue until I sucessfully burned a music audio CD & a picture DVD. Its movie DVD's thats giving me this problem.
What does this sound like to you? Thx

You must be reffering to WMV (Windows Media Video).
Sounds like your software, whatever you are using, uninstall it and reinstall. See what that does.