Here are a few links to free books:

E-Books (Free, Copyright expired) (free books and links to free books!) (includes some textbooks) (Advanced Search – Full View Only) (International Children’s Digital Library) (read or audio) (search engine for finding free books)
Textbooks: (some of the above, plus these: )
Music (Free for online-streaming, not download)
and many, many more!
Radio, Internet:
and many, many more