so my headset arrived today (I had to let my 4 jack plugged version go to my other half as the Macs dont have the ports). I ordered the exact same headset with the USB option. (Speedlink Medusa 5.1). Plugged into the MBA and wham - instantly working (how refreshing - no installs, hunting for drivers, or hassle). I installed TeamSpeex (the beta version for Mac OS) and connected to my Clan's TS server - wallop that works first time too Played a movie from iTunes and hello wonderful sound. Overall - My favorite headset is totally Macable and now I really cannot wait for COD4 to ship just thought I'd share this positive experience.