No other music app lets you generate playlists with so much control, and then, switch gears to follow other avenues, like same album, genre, or composer. Thanks especially for the inclusion of composer, both in the list gen, and in the information pane! Digital audio files can contain an amazing amount of info, and most audio apps do not allow access to it (Im looking at you Apple). Yes you can search by composer in some, but you cant see the name in play mode, and long titles are often cutoff. For that reason alone, this is really the only player for classical music listeners.
Smartplaylist packs an enormous amount of control into the interface, but lacks an attractive look; "Groove 2" easily wins on style. If the developer could take a cue from apps like that, this would be the one to beat. Id also like to be able to hide the left pane rules section, and be able to keep the player pane visible. In other words, separate the list gen from the play mode more.
Thanks for finally making a player that lets me explore my music the way I want!