and coming from the Microsoft surface rt then using the Acer which uses an atom procs, im thinking that Xbox music does something different with DRM then zune, because Zune works just fine, even Windows media player plays my zune music but not my xbox music, it takes longer to play a song I noticed too....main reason for using xbox music other than for the cloud music service, but the fact you are supposed to be able to play music in standby mode and you cant do that in zune or windows media player. I know that zune drm would allow the song to play for I think up to a month with out syncing because it used to play on Playforsure devices as long as you synced it through windows media player and my theory is that xbox drm must be way more restrictive and prob checks each song before playing it and maybe its too much for the mobile SoC out there intel or arm nd that's why the app runs so slow and crashes all the time and cant play through a full playlist, I think it all comes back to drm, well this particular issue because there are others with this app, like the lack of being able to see sd card content, yea I know there's a hack but its useless if you cant even play the music you download or stream for that matter ...I hope this reaches Microsoft software engineers some how and they can consider what we are all saying...