Ok, so for the not as techie person who just wants a simple answer

1. A2DP is something that is here in terms of a patched solution?
2. This solution is not yet at the point of installing a single .deb (or application) and enabling the headphones and go?
3. A2DP is currently a solution that only works in some apps and not across the entire ITOS?

Those are all yes/no answers, and I think should be able to catch the ah-ha moment of those looking for similar but who might have gotten lost in this thread a bit.