I bought an app called chordmaster that shows all the chords on guitar. An update was released for it. When I went to apply it, it said something about the update being available for the paid version or something like that, prompting me with a "buy" button. I thought this was odd, as I had already paid for the app. I ended up ignoring the update, but something must have got corrupted in the process. All the sound was now static. I ended up deleting the app hoping i could simply re-download it, but alas, I was prompted for a purchase. Has anyone ever had something like this happen? Its a cool app, but I shouldn't have to buy it twice.