First time user, liking what I see so far! ...But a core feature for me seems to be missing. When I'm looking at album, how do I add a specific song to my library, instead of the full album? On itunes, there's a plus button per-line/song, but all I see is the album-wide add button, and it's pretty rare that I want entire albums infecting my library. I can get around this for now by adding the song to a playlist, but that's way too many clicks for my most-basic interaction with most songs. 

Don't get this confused with 'favoriting'/starring songs, that's an entirely different interaction that is working/visible just fine. I do with each line had a plus AND a star button for less clicks, but oh well.

Found it, derp. I'd still like + and star buttons at the line-level, though!

Jk, everything I wanted is already here and I am an idiot :)