With my own account it seems to have a separate list for albums which is a PITA.. so I logged in, got all the artists and the 1 playlist I have, and no albums. Had to enter all 200 of them manually.. And of course it doesn't support podcasts (have to use tunein for that).
It also doesn't seem to sync back to my spotify account, although if you log out and log back in it keeps the same list.. so it's storing it somewhere just not the normal place.
I wonder if, now the browser supports audio, they'll just link it to open.spotify.com then it'll work the same as everything else. Would make sense rather than trying to write their own.