Interesting...I would like to see what the the ad rates will be when they get them ready, though. Especially since they describe them as "very inexpensive".
I don't really care about the music part of it, personally. But some of the seminars and workshops could be beneficial, depending upon the subject matter.
I would still prefer listen to the music I already have at home, and learn by reading and doing, rather than doing both of those things on a site like that, though.
But one thing, I have learned is that there are enough people in the world for everyone to be successful at whatever niche they have if they do it the right way!