Compiled by Valentin Spirik:
The VLC media player (or VideoLAN) http://www.videolan.org/ is an open-source video (and audio) player available for all major platforms and capable of playing back almost all video formats found online. The VLC can be used as a streaming server http://www.videolan.org/streaming/ and also for transcoding video(streams). (*)
10 Alternatives to iTunes for managing your iPod (www.simplehelp.net, 07.08.07)
The Complete Guide to Managing iTunes Videos (ilounge.com, 15.02.07)
How to: Share your music via iTunes on the Net (www.sevitz.com, 12.03.05)
hymn http://hymn-project.org/ "...allows you to free your iTunes Music Store purchases (protected AAC / .m4p) from their DRM restrictions with no loss of sound quality."
FairGame http://seidai.50webs.com/Seidai%20Software.html "will convert the songs you bought on the iTunes store to an unprotected format..." See also the related online article FairGame cracks iTunes using iMovie. (www.boingboing.net, 31.10.06)
iLounge http://www.ilounge.com/ is about "All things iPod, iTunes and beyond". This is a commercial site with a lot of useful resources (good forums, iPod how-to related articles and more).
HOW TO - Copy data off a Microsoft Zune (use as a hard drive) (www.makezine.com, 23.11.06)
See also the related online article Zune, Creative Commons Don't Mix (www.wired.com, 27.11.06)
Players Supporting Ogg Vorbis
The XiphWiki's PortablePlayers page http://wiki.xiph.org/index.php/PortablePlayers lists "all mobile players known to support Ogg Vorbis. Some do also play FLAC (please add information)".
Rockbox - Open Source Jukebox Firmware
Rockbox http://www.rockbox.org/ is an open source firmware for mp3 players, written from scratch.