Thumbnail Browser allow custom Tags

[themusicalmind]

Allow us to set use custom Tags in the thumbnail browser instead of the current predefined Artist and Album [and Groups].

Personally my library is a bit special but I use a custom Artist tag and right now it's impossible for me to use the thumbnail browser like that.

[silvestreccf]

If I remember i ask this last year, no one understand what I was asking for, put you put in the right words,  that Thumbnail Browser with this groups its useless....