I'm not the best person to answer this question (as I already said, I don't have bluetooth headset myself, so can't test A2DP stuff). I only suggested that if any extra options are required in garage mplayer package to make it more useful, it can be done Earlier we evaluated the possibility for ALSA enabled mplayer build for Nokia 770, but nobody was interested at that time. Also if optimizations to MP3 decoder running on ARM core are needed to lower cpu load and save battery, they could be done too. Alternatively we can investigate the possibility of running MP3 decoder on DSP, but that's probably harder and the result is not guaranteed.