TECH-ADVICE BLEG: Austin Bay has sent me some video files, with the extension .asf. They won’t open in Vegas. I can open and edit them in Windows Movie Maker — but I can’t save the resulting video to a separate file. What’s wrong, and what can I do about it?

UPDATE: The problem seems to be with a 3d-party codec that will let me play, but not save, the files. I may just have to get Austin to resend, but alas he’s on travel and probably can’t.