fix double back
fix genre 48 inactive pic
ignore NO Album/Artist/Genre by navigation in fileChooser since Track without are added anyway
implement player (now Output) as a Service for a longer lifecycle
forgot ressource
give asyncTasks a name for better debugging
ignore exception by getting album Art (mostly out of memory)
cleanup
overload back button for dirChooser
little fs scan user feedback fix
remove id as PK from table
fix null pointers for currTrack == null
fix some null pointers
Merge pull request #43 from Hoene84/master

Implement player as service