Default [Q] multimedia sound over bluetooth headset


i was searching all over the net for a solution to one particulary anoying problem. but lets start from the begining. i've migrated from N95 on which i used navigation software that allowed to pass all voice commands on how to drive through bluetooth headset (BH-104) with no problem.

currently on xperia the headset works but only to it's primal function which is calls :/ so my question is: are there any chance to somehow redirect multimedia sound to bluetooth?

BH-104 is a simple earpiece without any gadget's