Thanks for the response Fabion.

That was the first thing I did - adware, spyware and virus check. I made sure I'd got the latest updates before running them.
Came up with no hits.

I only got the system in Jan this year so everything is pretty much new. I'm running windows xp on a HP pavillion 80 gig hd, 512 ram,
Pentium 4 - 2.9 GHz. Not sure what else I can tell you.

(I'm not really what you'd call a computer guru although I am learning every day).

The really strange thing is that the avi files still play with no problem.

I usually use Windows Media player and when that didn't work I tried Real player and VLC, still nothing.

Once again, any light you can shed would be greatly appreciated.

Yours truly
Desparately seeking music.