Unfortunately, fb2k is pretty closely tied to win32 APIs, so porting it to winRT (the API) would be quite a project(like porting fb2k to any other platform).
However, with foo_upnp, I'm more holding out hope for a solid UPNP windows store app for my surface. The built in Music App is pretty much a disaster.
Didn't Microsoft also say that Office would be the only desktop application to be allowed on their ARM devices?
They said that? Do you have a link?
On its Windows blog, Microsoft said Window RT will not run legacy or new x86/x64 programs; will run only on ARM-powered devices; and, while it will have a desktop mode, this will be limited to Microsoft-created touch versions of Word, Excel, One Note and PowerPoint.
At this point I'd take anything - even Metro Foobar if it was ever developed.
Now that would be a rather ridiculous rule, wouldn’t it?