javaDoc edit
Further comment clearity
Created getTracks method to querry for all tracks or specific track.
Generalized to allow in for any table
fixed name of get table method.
modified artist to work with just name
creates db querry for all artists in group and creates tree
Modifies tree structure to be unmodifiable.
Impliments comparable non case sensitive.
Impliments comparable non case sensitive.
Commented out conflicting section. Is this in use?