transom.org has a tools section about equipment you can use to make radio, and lots of how-to guides.
Audacity is free, open source software for recording and editing sounds. It is available for download on Mac OS X, Microsoft Windows, and other operating systems.
A Pacifica Radio affiliate, WGXC can access public programs produced by other Pacifica stations and independent producers. On this site, you can browse some of the available programs. Let the Community Programming Coordinator or Station Manager know if you want access to a particular audio file.
Radio 4 All A place for grassroots broadcasters, free radio journalists, and cyber-activists to share radio programs. The archived material here is available to everyone.
PRX “The Public Radio Exchange” is an online library/marketplace of independently-produced radio content. You can listen to the full-length stream of any piece. For broadcast, most of the programs cost money – but you can often contact the producers directly.
Trans X: Transmission and radio art conference in Toronto in late May.
Third Coast International Audio Festival: Radio conference in Chicago in the fall.
Grassroots Radio Conference: Annual conference in different U.S. locations.
NFCB Community Radio Conference: National Federation of Community Broadcasters hold their conference in a different U.S. city each year.
Allied Media Conference: Activist media conference in the summer in Detroit.