Scribd Audiobooks - Unlimited access to 30,000 audiobooks
SnapDB - Simple, flat-file database/list app.
BookPlayer - Player for your DRM-free audiobooks. Contribute to TortugaPower/BookPlayer development by creating an account on GitHub.
sPlaylistMaker - sPlaylistMaker allows you to easily create .m3u and .m3u8 playlists
Channels by Audible - Follow handcrafted interest-based playlists.
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.