I tried to use my Jabra 3030 headset to both my phone and my n800. Found out after searching around here that Maemo support for A2DP (thing that makes bluetooth headset work) is real crap!! Its possible to get it to work by running a bunch of hacks, special versions of mplayer etc. REALY REALY stupid by nokia to not implement better bluetooth headset support!

Try search this forum for a2dp and you will find more about this.

// Samuel