Why do you need an "App Store" clone for every OS now? How is this supposed to make sense for free software in a Debian based distribution? Why don't they just put that stuff into regular apt repo?

But will it run on Linux?

Unfortunately the Black Hole is about to be shut down for good. They had a fire sale a few months back, and planned to close the thing up by the end of the year.

You have to compile wine in a 32bit chroot. Instructions are on the wine wiki. It is pretty straightforward. But without decent hardware acceleration in Silverlight under Wine it runs like crap. I tried it, but it is so jerky (half the frame rate) that watching TV like this is no fun.