What now: I'd thought about my architektur... and decided to rewrote all. In order to get clean code. Also i do not want to use OrientDB, just becouse it's too hard in this project. In search in other database (ObjectDB seems good).

What must be: Simply in use and powerfull crossplatform music player fully wroted in java. First objective is reseach java. First trouble is UI. Working on...