This is a free editor and allows you to upload directly to YouTube. As far as I can tell there is no real limitation to the free version however if you upload your video to YouTube using the free video it will place a Creaza logo in the lower right corner. This is a limited free application. This site allows you to create cartoons, music and videos all in one place.
Create your own background music and short music clips for videos and podcasts.
This is a great site that allows you to create audio tracks.
This site allows you to edit audio and share them on the web. This is a free site and quite simple to use. Can only be used on a Windows machine.
Free audio editor and that downloads to your machine.
Free easy to use audio editor great for podcasts.
A fully featured multitrack audio and MIDI recording, editing, processing, mixing, and mastering environment. Windows and mac platform. Must be downloaded to machine.
okosher is a simple yet powerful multi-track studio. With it you can create and record music, podcasts and more, all from an integrated simple environment.
Another site to create your own unique sound files.