SnapDB - Simple, flat-file database/list app.
Kobo Audiobooks - Experience the joy of being told a story
sPlaylistMaker - sPlaylistMaker allows you to easily create .m3u and .m3u8 playlists
Scribd Audiobooks - Unlimited access to 30,000 audiobooks
Playlist Creator - At oddgravity you find useful tools for Windows and exciting games for the small deflection in between. All programs are Freeware and can be downloaded directly from the homepage.
Prologue - Audiobook player on iOS for Audiobooks hosted on a Plex media server