No coupling between laptop with Windows Vista and BBR100

I bought the BBR100 because I wanted to transfer music from my laptop to my stereo without tangling. After all, the description in the Amazon was as follows: "Send your music from any Bluetooth enabled device (eg mobile phone, laptop) to your stereo system."
But since I could link the BBR100 even after many attempts, neither with my laptop with Windows Vista, even with my PC with Windows XP, I had to go well on the search problem and was also able to find. Result: Neither XP nor Vista have the required drivers to support A2DP. A functioning Toshiba driver I could find, but this has only a 30-day license. Where you could get a purchase driver and what this would cost, I can not figure out. But as I now at least been able to build a working connection, I was naturally curious about the transmission quality. The result is unfortunately disappointing. A tinny sound without bass and without a subwoofer. As one might bring the sound as described below by a reviewer for MAC, for Windows to work, I could not find out also. Incidentally, the connection from mobile to the BBR100 immediately went without problems.
(21.03.2011) Addendum to my review:
I had bought the ASUS USB-BT211 subsequently Nano Bluetooth Stick. Here is an A2DP drivers. This now also low frequencies are transmitted. On the slightly unclean sound, I guess the THD at about a 3%, but nothing has changed.