Annoyingly, SkyDrive is entirely broken for me.
There seems to be a routing configuration problem somewhere between me and SkyDrive, leaving me unable to reach the content server used for my account (it's not every content server though, I've downloaded public files from other accounts just fine).
The result is that while the metro Skydrive app and web site can list the file, anything besides Office documents cannot be downloaded or viewed. The desktop SkyDrive app refuses to sign in.
This is extremely annoying, but since the issue lies at some server between here and there that only has an IP address (tracert can't resolve a name for it), I have no idea how to fix it.