A couple of ideas possible. One...it's the same stream but due to the lack of commericals on HD broadcasts (they can't sell them for the regular signals let alone for the alternative) you're getting to hear the music that BA puts under the spot breaks that covers those time periods when the station does not have inventory to put there. So in case there's nothing making money for you at that moment, music plays for three minutes, without any song ID until the jingle plays which would get you back from commericals if there were any. Not as confusing as it sounds. The other possibility is that they have created a separate stream for HD without the spot breaks but I can't imagine that BA would spend the time on something that would have no payback for them at all. Especially if they believe that the version they already have is ok for them, it must be ok for you too. Also, the station could be adding their own music and just using the songs that the BA air talent (oxymoron) backsell. That was an option given for all stations who wanted to customize their sound closer to their market and not buy into the water down version on the bird. I would believe it's the first one! Meet the new boss, same as the old boss.