Aqui já comentei dezenas de opções de várias categorias para baixar ebooks, ícones, mp3, torrents e muito mais material com a licença adequada. No dailybits.com fizeram uma lista que ampliei com links para obter mais opções.
Espero que gostem:
AudioLivros
Librivox
Podiobooks
Oculture (Audio e Podcast)
Learn Out Loud
BitTorrent
The Pirate Bay
Mininova.org
Torrent Portal
Now Torrents
Torrentz
Livros e documentos
Scribd
Sheet Music Archive
ComputerBooks.us
Docstoc
Tech Books
Project Gutenberg
Free eMagazine Download
eBooks
KnowFree
Spotbit
Ebookshare
Ebookee
Wowio
Internet Archive
Clipart
Open Clip Art Library
WP Clipart
Clker
Clipart.com
Software
Softpedia
Download.com
Open Source Mac
Free Downloads Center
Tucows
Phazeddl
Freeware
A+Freeware
Best Freeware Download
Free Ware Box
Freeware Zoom
File Hippo
Windows Downloads
Major Geeks
Brothersoft
Arquivos Flash
Fontes
Dafont
1001 Free Fonts
Download Free Fonts
Show Font
FontStruct
Jogos
Liberated Games
NDS-ROMS
Iwin
Donwload Full Version PC Games
Abandonia
Best of Games
Free Games
Filmes
ZML
Free Documentaries
Moving Image Archive
MP3
eMusic
Jazz on Line
Jimmyr
Music Download
beeMP3
Download Any Stuff
Skreemr
iLike
eMP3 World
Jamendo/
Vídeo
Vixy
Keepvid
Javimoya
VideoDownloadx
Download YouTube como mp4
Kiss YouTube
Download YouTube Videos
keepHD
Photoshop e Desenho
Deviant Art Photoshop Brushes
Adobe Market Place and Exchange
Pixel Chick
Vecteezy
Busheezy
Vector 4 Free
Get Brushes
Q Vectors
Archive 3D
Vectormix
Efeitos de som
Soundsnap
FindSounds
Partners in Rhyme
Stone Washed
Bancos de imagens
Stock.Xchng
Free Digital Photos
Morgue File
123RF
Utilidades de sistema
Open Drivers
DLL Files
Download 3K
Free Codecs
Open Office
Desenho web
Open Source Web Design
Free CSS Templates
Template World
Iconspedia
Free Icons Web
1000+ ícones clássicos
Spotbit
Ícones profissionais