I know this has been covered but, there seems to be no real solution on the forums. I have a Nokia BH-900 bluetooth headset and the sound is horrible when using the media player, a lot of crackling. How do you disable the wifi completely? I've tried disconnecting from my wifi network and the sound continues to be bad. The theory that the wifi interferes with the bluetooth also seems fishy as i use the same headset with my BlackBerry curve using UMA and I have no sound problems.

Any ideas?