Let the hive mind of Engadget get that for you.
"I am looking for a device that will stream sound from one source to several recipients. For example, I want to stream sound from my TV or stereo to my phone or MP3 player that has radio and Bluetooth capabilities. I have looked into radio transmitters and they seem like a decent choice, but I can't find one that uses external power (USB or from the plug) and I would want one with a transmit range of around 50 meters. Thanks!"
Best Buy is looking at things from the perspective of Monster and Bose, which is that sufficient and effective marketing can lead to good revenues of questrionable products and services. They figure they'll get enough ignorants with money into their stores to justify the offering, and in the Age of Credit they'll get a lot of ignorants.
Sounds like the perfect time for people to shop their sales floor offering DIY how-to services to compete. While its nice seeing the Dummies Guide to Home Theater in the bookstore, how often do you find joe six-pack there?