Update: After using it for a year and specifically on IOS 5....IT IS FANTASTIC...THANKS
Update: After the second wipe, it has been stable.
When I bought this app, I fell in love with it BUT, twice when I launched the App, it rebooted my iPhone 4 and after the reboot all my music were gone!!!, and had to reload my rather large library. I have deleted the app since and have not had the issue any more. There is not an official website for the seller to complain rather a Facebook user page.
Pashmaky about Media Mix Pro