ok i was a mog user and loved it. i was one of the first napster legal monthly subscribers. ive since used yahoo music, rhapsody(liked the least), grooveshark(excellent possibilities), and then i discovered spotify. What everyone here is missing, what makes spotify great, is it incorporates your own purchased/ripped/????? mp3 collection in with its huge on demand library. whats the big deal? there are no music services that can incorporate metallica, the beatles, acdc, pink floyd, tool, etc, etc, etc with any of its playlists or you subscribe to hear. this alone kills any other services CATALOG SIZE. IF THEY DONT HAVE IT, you can buy it(hopefully) anywhere else and add it to make whole and complete playlists.
Now dont jump down my throat here, i realize even if spotifys streaming service came to roku, these personally owned tracks wouldnt stream to the box. but, the boxes do have usb ports which you can use a flash drive or memory card in a usb reader to store your local music. and the spotify app should/would search out and incorporate these tracks the same way it does on the cpu, & android & ipod devices.
And even if spotify chose not to incorporate local files on a roku app, the fact that its become the music service of choice by my family and almost all my friends who use subscription music services have switched to spotify, having the app on my roku just for streaming spotify licensed content would still be welcomed and should be necessary.
in fact i still have the original box. i have had no reason to upgrade it. but it has no usb port. a spotify app which used the usb port for reasons i mentioned above may be the push i need to purchase a new one.