edjing PE is an app that is not updated anymore by DJiT. Thus, the version will never evolve.
Not to have problems anymore, we advice you to try an app of the edjing Suite: edjing 5, edjing Pro and edjing Pro LE.
If you are looking for an app to begin the Djing and have fun by creating your own mixes, you should try edjing 5. It's free.
If you are an experienced DJ and you are looking for a more professional app, you should get edjing Pro (it's a paid app).
You can try edjing Pro by downloading edjing Pro LE, which is the trial version. Hence, the features are limited and you can access to only dozen tracks of your native library.