That actually happens? Thats so friggin sad!!
What you could do though is find (or make, you just need Winhex) a patch for K610/W660 to transfer seetings/camera to other/camera. Then copy paste the driver when you want to use the camera and restart the phone to use it.
When you want the walkman delete the driver.

Still, can't you just live with the media player?? :) :)