I have a Treo BT headset (recent model). I use it with my G4 Powerbook (via DLink USB BT adapter). It plays music and the audio works with my XTen Eyebeam VOIP softphone. I would LOVE to be able to pick up/hang up calls using the headset button, like it does with the Treo 650. XTen tell me that the Mac currently does not support the handsfree BT profile, but have been unable to find anything about this on the web. Any Mac / BT experts out there know what would be involved in getting the handsfree profile onto the Mac?