So, Spotify is the greatest thing ever. I pretty much use it exclusively at home, work, and on my mobile now. I've actually started going through and making some Spotify playlists of mp3's, etc.., that I have been collecting over years and have run into a couple things I think could be improved.
1. Folders/Categories of Playlists. I've been making more and more and the sidebar is getting cluttered. I have a few playlists of entire albums or single artists that I really like and would like to be able to categorize them. I could see it being useful having a way to organize playlists by "best of", "comedy", "single artist", etc.. Thoughts?
2. It would be great if I knew if a song was already in my playlist. May something that would say you've already added it. Or possibly when searching music, have an indication of whether you've added it to a list so you don't accidentally get duplicates.
