Windows Mobile Standard

Does anyone know if and how I might be able to upgrade the Out-Of-Box bluetooth functionality of any Windows Mobile/Palm OS smartphone to support A2DP and streaming audio support for stereo output to Stereo BT headsets e.g. Motorola\HT820. Currently the only Smartphone I know that supports this functionality is the Motorola Q. I have it and It REALLY SUCKS!!!I want to change phones but can't find a quality CDMA Smartphone that has this feature. Pleeeeze HELP!!!