...to stay away from anything developed in Redmond.

On a serious note, I'd be obliged to hear from any Mac users regarding viruses/spyware/adware.

I NEVER use the LW player, but I have opened one .wma while online. Luckily, it didn't/couldn't install anything, and when I saw the file wasn't music, I tossed it and vowed never to touch .wma files again.