Windows Media Player starts when inserting CDG disk

[waynec]

It is very irritating to have the Windows Media Player start when I insert a CDG into my Plextor unit. It does this on several insertions when first starting Microstudio. I hit stop in WMP and leave the program active but minimized. It then does it again several times before it never does it again (until the next time I start MS). This wastes a lot of time and is so irritating.

How can I prevent this from happening?

I tried to delete a file association in Windows but Windows will not allow the line to be blank. It requires "some program" to be entered there. There must be another way to prevent WMP from starting but have no idea what.

Thanks.