Since January, I have been using this HP BT stereo headphone with mixed results on my X50v, but overall, I like it, for the cordless convenience and the "very cool factor" to show-off to other MP3 player (e.g. iPod..) users :approve:
This headset offers excellent audio quality with WMP10, but little poppings with BetaPlayer, MusicPlayer,...
Note that the X50Mix tweak has no-effect on audio quality, neither the volume control from your Axim, you have to use the volume control on the headset-unfortunately that is the only one that works on the headset, the previous, next buttons don't work.
Until yesterday, I discovered there was a crack on the plastic headband and I lost the sound. GRRRR! I tried to repair unsuccessfully with some scotch tape...
Called HP Shopping and found out yesterday was the last day that I can still exchange for a new one ...Great timing!

,
They emailed me a FedEx label to send it back. In the meantime they sent me another one immediately (and charge my Credit card for it but they will re-imburse when the broken one arrives..)... Whahooo! Go HP! :approve:
Link at HP Shopping:
http://www.shopping.hp.com/cgi-bin/h...AC3&catLevel=5
Link for BT high audio quality stack:
http://www.pdagold.com/forums/view_t...sp?t=5012&fi=0