I'd like to put up different collections, eg. my "test" collection on which I can run my tag-scripts etc and my "production"collection.
Depending on which collection I select, I can use the index that belongs to that collection.
Or... my collection and my colleague/friend/son/whoever's collection because I do not want others to use my music and secure my collection with a password or token or so...
This way multiple persons can use the same soundbridge (although ofcourse not at the same time) but selecting their own music collection.