yorolpal
Because I are so stupid I didn't know I could do such a thing. Is it painful?
Nope. Just go into Control Panel -> Sound, open the properties for the audio device and there should be a tab where you can set the default audio format. The layout differs depending on the driver, but you should be able to find it.
I had to do this with mine because it doesn't switch reliably more than a few times in a session.
Regards,
Dan