Playlist Lab app for iPhone and iPad

Playlist Lab gives you the ability to take charge of your music.
• Create and edit playlists with easy drag and drop
• Display lists of tracks of any artist, composer, or genre, creating playlists from them with a single command.
• Edit the genre and rating of tracks, create new genres.
• Include tracks from inside your iTunes library and from audio files too.
• Sort by title, artist, composer, genre, rating, last played date, etc...
• Sort randomly. See the order of tracks in “shuffle” mode before they play. Drag and drop to tweak the order.

Playlist Lab allows cross-fading between tracks. It has a unique auto-crossfade-time feature that finds quiet sections at the beginning and ending of tracks and brings them together for seamless playback. You can manually adjust the automatic crossfade times. See the loudness-vs-time curve for each track.

A real-time audio spectrum display informs and entertains during playback.