I haven't seen this addressed (yes I did do a search!):

I purchased a state-of-the-art GlobalSat Bluetooth Audio transmitter/receiver Bundle, enabling me to connect my headphones to a tiny portable receiver with and equally tiny portable transmitter cnnected to my iPod (or the inflight audio system). This enables me to potentially walk around the cabin listening to my iPod remaining safely in the i.e. seat pocket. the technology permits connection from 10 - 100 meters and penetrates all but a few solids.

The question is: are there rules guiding non-cell phone wireless technology in-flight? I have seen many paxes use the in-ear bluetooth device during flight (given away by the blue blinking light) and I (and probably many others) are using their infra-red remote to their PC/video player. I would also be astonished if some did not use a bluetooth connected mouse when working on their PC. But does that mean I can go to the lavaory (close to the cockpit by the way), and keep receiving my music via bluetooth?

Thus, does anybody know any reference to "do's and don'ts" regarding this rapidly advancing, physically shrinking technology?