It is one of the Setup Panels for the original Espail Escape/QNX WebPlayer.
The Original WebPlayer will receive certain types of streaming audio--RealAudio 5+
We found this out by accident when the unit was used to sign up for an Internet Seminar. We then went to the RealAudio website and found that it can receive NASA webcasts but not the latest ReadAudio (ver 8) webcasts.
When we recently changed ISP settings for the WebPlayer we checked all the Setup Panels. It is our Gut Feeling that the Mini Tuner Settings Setup Panel controls the streaming audio.