This simple app makes it really easy to download and save audio from YouTube - find out how, right here.

A free online tool to convert YouTube videos into MP3 audio files The YouTube to MP3 Converter is an easy-to-use, free website.

To export Audacity files as MP3s, you just need to use the "Export" option in the program's "File" menu.

Over 100 transition year students heard from Michael McCarthy of Waterford Institute of Technology about the ways that classroom trigonometry are being used to create MP3 files.