www.audacity.sourceforge.net Audacity. This site has a free open source downloadable program for recording and editing in MscOS, Windos and Linux
Through this tool, you can record and share audio for your students or anyone else.
http://aviary.com Aviary Aviary offers an online suite of free image and sound editing services. Aviary's Myna service is a free web-based audio track mixer created by Aviary. Using Myna you can mix together up to ten tracks to create your own audio files. The sounds you mix can come from the Myna library, your vocal recordings made with Myna's recorder, or audio tracks that you upload to your Myna account
http://www.edu-cyberpg.com/Music/Home_Music.html Educational CyberPlayGround This site has an index of sites that allows free music downloads for educators
http://www.squared5.com MPEG Steamclip MPEG Streamclip is a powerful free video converter, player, editor for Mac and Windows. It can play many movie files, not only MPEGs; it can convert MPEG files between muxed/demuxed formats for authoring; it can encode movies to many formats, including iPod; it can cut, trim and join movies. MPEG Streamclip can also download videos from YouTube and Google by entering the page URL.
www.pdinfo.com/index.php PD Info - Public Domain Music-Royalty Free Music This site has info on public, domain music.
http://VoiceThread.com/share/558435 A VoiceThread Tutorial
http://VoiceThread.com/?#c28 VoiceThread Tutorial Using VoiceThread