If I had a Bluetooth earpiece, like the Jabra thingies that are designed to work with Bluetooth phones, could I just use it as a Windows sound card for VOIP, listening to music, etc.? (Assuming I had a Bluetooth/USB adapter, of course.)

I use a wireless (RF) headset on my left ear for our office phone system, and I'd love to be able to use a wireless gadget on my right ear instead of the wired headphone hanging off it. I'd guess it'd be a better microphone than the cheap little thing mounted on my monitor, too.