Ever since setting up an Xbox Music Pass, I have been unable to actually play music on my Xbox 360. Like the poster here, any song I try to play within the Xbox Music App on the 360 is listed at length 0:00/0:00; if I try to play an album or playlist, the entire set of songs is 0:00/0:00.
For what it's worth, my 360 is set up with the same Gamertag as my Windows Phone 8, and if I look at the account settings inside the Xbox Music App on the 360, it lists my proper account credentials, including a paid Music Pass subscription. However, if I look at my Music Pass subscription via xbox.com, my Xbox is not listed as a device from which I've used my Music Pass. My Windows Phone 8 and desktop computer (running Windows 7 and accessing Music Pass via the deprecated Zune client) both are.
Things I've tried so far include:
1) Power-cycling my router and cable modem.
2) Deleting the Xbox Music + Video App on the 360.
3) Deleting and reinstalling Internet Explorer on the 360, a la the thread here. Incidentally, "Share to Xbox" no longer even appears as an option on my phone while playing music; when it did, it always tried to load Internet Explorer on the Xbox, and then produced an error. Playing music from the store via the Music Pass from the 360 has never worked in any case.
4) Deleting the system cache on the 360.
This is, as you can imagine, extremely frustrating -- I moved from Android to WP8 specifically so that I could stream music from an online source through the 360 in my living room, and this has never even come close to working.