As a follow-up to my above-quoted posting, I have received my miniature mp3 A2dp dongle, and it works perfectly on all my mp3 players (especially including the N800). None of the initial start-up static I'd previously encountered using Milhouse's ingenious hack with Kagu. This dongle, which only cost about $20 plus shipping, and is available all over eBay, plugs right into the audio jack and is quite inconspicuous. Until we get an integrated a2dp facility again for the N800 -- and even possibly beyond -- this dongle will get much use. The only limitation to its use is that you must have Bluetooth headphones that pair with the "0000" code -- as my Motorola does.