Hi Ziggy,
Have you been tinkering inside the PC case? I just wondered if the wire has become disconnected between the CD drive and the sound card? If not...
I think I may have created my own problem somehow...
Do you have any idea what you might have done, and can you go back and undo it? I know this is sometimes not that simple as it's easy to lose track of what you have done.
Another idea is to use System Restore (if you have XP or ME) to try to go back to a date before it went wrong.
Other than that, if you could provide some more details, then one of our techies should be able to help you:
1. What is your Operating System? (XP, ME, Win98 etc)
2. Do you have any other Media Players on board, like Winamp, or Windows Media Player?
3. When did the problem occur, and did it coincide with any other changes in your PC, like installing or uninstalling new software?