Moog has their Filtatron app and now Moogfest has an app too:
Welcome to the place for all things MoogFest 2010. Here you can check out all the bands, movies and presentations going on at Moog Fest, and place them into your schedule. Get directions to the venues around Asheville, and even see how close you are using the GPS button.
You can even check out the New Filtatron Moog app that is built in.
Now go enjoy Moog Fest!