All-in-one music player with SoundCloud, YouTube, last.fm and the unlimited cloud storage integration for Mac and iPhone.
Con Collections and Playlists not good enough. Too simple.
When you have a big library you need a little more than just a bunch of names gathered. Adding folders to a collection put all files in a column and that's it. No sign of which album the song is from, cover etc... you have to play the file in order to see more info... Too simple.