It's a shame this isn't taking off as well as it should. I'm guessing it's because people really don't know what they're paying for. By that, I mean that no one has any idea what music they'll get in the concert/on the album. It might have been better to include 2 or 3 tracks guaranteed to get people interested, and the remaining tracks could be voted for.
I love the concept, and I'm a backer, but I can understand that, with a voting system, it's a gamble to back this project, and people may feel they are more likely to get a collection of music they themselves are no way interested in, rather than a collection of amazing arrangements of video game music they particularly love.