OSX 10.8.5
imac 2013 i7 3.5 16G ram, 256ssd
Have ProTools HD Native Thunderbolt installed
Monitor using Dangerous Source via USB - no additional driver

iRealPro loads and i downloaded 1300 jazz tunes. Works fine on my ipad2
When I go to play a song on my imac I get a brief flash where the countoff usually happens and then it just stops.
That's it - never makes a sound.

PS - I deleted the app and reinstalled but same thing. Also i deleted all the songs and now when I reinstall I get - no songs.
- How can I do a full uninstall and start again?

I also tried using just the internal imac speakers as the output device - same thing.