I am going to try and maintain this page as a list of resources and assets that are freely available and are licensed for use without purchase. In other words, they are either released with one of the Creative Commons licenses, a GNU General Public License, or are part of the http://en.wikipedia.org/wiki/Public_domain.

Audio

Philharmonia Orchestra – free  sample library of orchestral instruments

Opsound – collection of copy left music and recordings

ClassicalCat-a source for public domain classical music
Creative Commons Audio blog-just what it says, the blog for Creative Commons audio
CCmixter-a site hosting audio shared under cc licences for remix http://dig.ccmixter.org
jamendo-a site with music released under cc licences
Musopen-a site with recordings of public domain music
Free Music Archive– a free music archive organized by WFMU, a radio station in New Jersey
Freesound.org – Archive of creative commons sound samples
Image search

creative commons image search in google
creative commons wikimedia
creative commons Image
flickr creative commons search

Fonts
Font Squirrel – a collection of free for commercial use fonts
Miso – a free font
fontforge – font editor/creator

Open Source Production Software

digital photography
Gimp – GNU Image Manipulation Program, “photoshop equivalent”
darktable – “a virtual lighttable and darkroom for photographers”
Raw Therapee – a RAW converter and digital photo processing software
Raw Studio – raw converter

digital painting
Mypaint – fast digital painting program

3d animation
Blender – the leading open source 3d animation package

2d animation
Inkscape – An Open Source vector graphics editor
Pencil – bitmap and vector animation software
Synfig – vector based 2d animation software

writing
Celtx – pre-production software, integrates scriptwriting and scheduling
Open Office – office suite

audio
Audacity – audio recording and editing software
Ardour – digital audio workstation
Hydrogen – drum machine

video editing
Pitivi – Linux video editor
Kdenlive – Linux video editor
Lightworks – windows video editor

Articles
Marshall McLuhan interview in Playboy March 1969 html
Benjamin, Walter. “The Work of Art in the Age of Mechanical Reproduction. Illuminations ed. Hannah Arendt trans. Harry Zohn Schocken Books New York, NY 1968. html pdf
Alexander Galloway 24/7 is 24 a political show? in Afterimage pdf
Gunning, Tom. An Aesthetic of Astonishment: Early Film and the (In)Credulous
Spectator” in Viewing Positions: Ways of Seeing Film. Rutgers University Press
New Brunswick, New Jersey 1994. 114-133 pdf
Christopher M. Kelty “Geeks, Internets, and Recursive Publics,” Cultural Anthropology 20, no. 2 (Summer 2005). DOI 10.1525/can.2005.20.2.185 pdf
Ian Parker Absolute Powerpoint: Can a software package edit our thoughts? html
Elisabeth Bumiller We Have Met the Enemy and He Is PowerPoint Nytimes.com Published: April 26, 2010 html
Dan Shaw Sergei Eisenstein in Senses of Cinema html
Sean Cubitt “Making Space” in Senses of Cinema issue 57 html
Deep Play: Notes on the Balinese Cockfight
Women’s Creation of Camera Phone Culture – article on camera phone usage in Korea