$2.99 down the trash shoot!

So I get this 2.99 dollar app and Im like "yay!!! Pro!" But I click on it, go to add a song, but when I click the song I want, it exits me out of the app!!!
Ive re-downloaded,shut down my phone, Ive done EVERY THING!!!!
This app deserves 1/2 of a star. Im very upset!! And yet! Im a tween! GIVE ME BACK MY MONEY!!!!!!!!!!!!!!!!

Snoopy about Micro DJ Pro - Party music audio effects and mp3 songs editing, v1.0