So I bought a Plantronics Backbeat 903 BT stereo headset to go with my Nokia N900. I am very disappointed though because there's a serious problem with music playback: the tone keeps changing (going down mostly, sometimes also up), like when a record is being played more and more slowly, and it really ruins the music for me. This phenomenon has nothing to do with batteries (headset or device) being low, it also occurs when both are fully charged. So I'm wondering, is Bluetooth technology in general simply not ready yet for serious music streaming, or one of my devices is just not working properly?

Has anyone else experienced the same thing with stereo BT headset?

Has anyone successfully used a specific BT stereo headset (full music- and call-controls, good sound quality) with the N900?

Recommendations?

Thanks, Ben