Yes, I'm looking for BT transmitter.  The Miccus minijack product to which you refer looks effective [though requiring charging seems pretty annoying], but I am really looking for a USB adapter that can be used to pair things other than just audio receiving devices (mouse, keyboard, etc).  Many...

I need to know this as well.  One using APT-x codec.  One that will work with Win 7 64bit and win 8.1.  Thinking of getting Sennheiser M2 wireless (I know there is a BT issue right now being sorted out).