Wishlist: support multiple collections

[Rasmus Thystrup Karstensen]

I would like a feature to organize my audio into several collections. This way I could easily seperate my music from my audiobooks and these from my digital chinese language course :P

I suggest that when you add a path to the collection, you also (optional) provide a name for that path (collection), if no name is given, all files will belong to the default/all collection. In a collection manager you can then choose which collections you would like to be represented in the collection-tab, if several collections are enabled, the collection-tab should represent the union of those enabled.

If given this feature, my audio would be organized into five or six collection.