READ: Protect Yourself From Audio Adware

Worried about downloading the wrong file and messing up your PC? For the moment, you don't have to fret much. Even though PC World found files that purported to be music but, when opened, spawned a flock of pop-up ads, audio and video adware isn't widespread. And malicious hackers haven't yet figured out how to craft files that do the same thing. But to be on the safe side, you should think a little more carefully about the files you download from peer-to-peer networks.

The easiest solution is to simply stop downloading WMA files from P-to-P services. But with legitimate, music-industry-sanctioned P-to-P services preparing to launch early next year, that may not be an option for everyone.

Full story: PC World

-thank god I dont buy music online, and god help people who do, next year onwards atleast ;)