Some thoughts about XBox Music Pass
I can imagine Apple & Google not allowing a native app on their platforms because of the competition. Apple is about to come out with iTunes Streaming and Google has Google Music. The way for Microsoft to get around this is make a kick-ass HTML5 site called "XBox Music" where you log in and get at least most of the functionality. At the very least be able to search for and play songs/albums and maybe DJ mix. Imagine exposing 900 million iOS/Android users to XBox Music!