Helium Music Manager - You can take control of your music collection.
calibre - Ebook manager, viewer & converter
AIMP - AIMP : Free Audio Player : Официальный сайт программы
FBReader - FBReader is an e-book reader for various platforms. Features:
Music Collection - This Music Collection Software allows you to organize your music collection including CDs, MP3s or vinyl records into a fully searchable database.
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.