Roy,
I have the FlightCom Denali ANR Headset, the music sounds great. To change Channels, I go to the Xm Page, and scroll down to the channel I want. The Unit Is not touch screen, You use the four arrow toggle to scroll to the music channel, once on the Xm Page.. My Intercom mutes the music, when the planes Comm radio Is active.
I think since you are already a Xm Subcriber, you then get a family plan discount for the monthly music fee. XM, has all of the MLB Games this year, so no more listening In on the Crackly ADF

Dont Forget, With the 396, you also can look up any airport info along with the current Metar. Crazy technolgy and all In my A150K !!