From Audacity
http://www.audacityteam.org/about/screenshots/

The third Web 2.0 tool I chose to explore was Audacity which can be found here. Audacity is a free audio recorder and editor. Audacity allows you to record audio, computer playback, edit the recordings, change the speed of the recordings and pitch of the recorded sound. Audacity also allows you to remove background noise from a recording.

Audacity is free and the code is readily accessible and licensed under the GNU general public license. The site is licensed under a creative commons Attribution license (CC BY)  

Audacity could be used in education to help students create innovative projects. They could record and mix audio for a presentation. Audacity could also be used to record lecture material, with the permission of the teacher, for future study use.

Audacity could be used by students with slower processing speeds as you to slow down the speed of the recording. This could help students process what was said. Audacity could also be used by any language learner (especially ELL students). Audacity could be used to slow down the speed of a lecture. The slower speed could increase ELL students understanding. Audacity would not help students who are deaf but could be used by students who are hard of hearing. They could increase the volume to help them hear what was said.