Sufi Music Festival in Jodhpur

I want to go to the World Sacred Spirit Festival in Jodhpur Feb 1-16 but can't find tickets on insider.in. Their website says tickets available at the venue. I'm not sure how to buy them there, and will I actually get them there? Does anyone know if there is another way to buy them online? I don't want to fly all the way to Jodhpur and then not get tickets :( Thanks for your help!