OverDrive has a large collection of eBooks and audiobooks compatible with most readers and players, as well as android and ios phones and tablets.
EnkiLibrary is a California statewide cooperative eBook lending library that maintains a collection of small and independent press titles compatible with most portable devices.
Freegal provides DRM-free .mp3 music files for over 7 million songs from 10 thousand music labels. Yorba Linda Public Library patrons are allowed to select and download 5 titles per week free of charge, and to stream music online for 3 hours per day.
Gale Virtual Reference Library provides trusted, authoritative reference works in electronic format for easy reading and searching online.