The option doesn't show up on my 635 running the developer preview.
Has anybody gotten this synced with a Windows phone? That's all I've got.
Amen. At $100/year for me, Xbox Music is an unbelievable deal. At double that for me and my wife, something doesn't feel right.
I was just about to post the same thing as Norexan: just open whatever media you want in the Video or Music apps in Windows 8.1, go to Charms->Devices->Play->Xbox One, and there you go....
I got the Smart Glass update but not the Music update. I'm pretty sure I'm up to date with Cyan and the developer preview too.