I'm using the jawbone 2 on an 8820 running 4.5.0.52.
I was able to get it to play music using xplayer (you can change the audio path to bluetooth) for a little while, but every few songs or so, it switches back to speakerphone.

Does anyone know of a solution to this?

btw if you are wondering, the music quality isnt great, but good enough for me to listen to at the gym

i had posted this in bluetooth forum, but i think the question is more related to software than bluetooth....

There is no user facing solution. This is a program conflict with xPlayer and what you are attempting to do. That being said, you are really trying to do something that is not supported.

I would try to work with the xPlayer devs to see what advice they can offer.