New BT apps allowing streaming HighQ MP3 towards BT headsets

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I own a Bluetooth Motorola headset HS810.
I also own:
- a MDA compact
- a MDA III and
- a XDA II

I see that recently someone was able to USE BLUETOOTH NOT ONLY for receiving phone calls, but also for listening to MP3 and other sounds or musics (via Windows Media Player).
My GOAL IS TO USE my BT headset and HAVE THE SAME QUALITY THAT I CURRENTLY HAVE USING STANDARD HEADPHONES.

Now what about quality? I heard about ADSP, a new bluetooth stack which allow much higher sound quality, quasi-stereo quality.

My questions are:
1. can somebody please summarize what is the current development status? Can somebody clarify this subject to unprofessional and amateur users like me who are eager to use BT headsets and listen to MP3 (not only pick up phone calls)?

2. If this new BT stack (widcomm or toshiba or microsoft ?) is already available, then in which units can be implemented? MDA compact? XDA II? MDA III?

3. Supposing this new BT stack already exists and it enables Windows Media (or similar applications) to stream sound for BT heeadsets, THEN can I get “quasi Hi-Fi” sound quality with my current Bluetooth Motorola headset HS810 or shall I need a replacement, a better BT headset a new generation one?

Thanks for your kind suggestions
Saulo866

Wrong post