Thats the latest to hit the world wide web. Since most of us have been taught not to open executable files or any suspicious files from strangers, the virii writers have moved on to MP3 music files which till now were considered safe.

Security vendor McAfee reported that it's seen a huge spike in fake MP3 files spreading on peer-to-peer networks. Although the files have names that make them look like audio recordings, they're really Trojan horse programs that try to install a shoddy media player and adware on your computer

Over the past 24 hours, nearly a third of the McAfee customers who reported data back to the security company have detected these files, he said.

In the past few days McAfee has spotted the files on more than 360,000 users' desktops.

Source