Looking for a way to create audio files?  Try Audacity.  Audacity is free, downloadable software that lets you record and edit audio files on your computer. Audacity has many features that allow you to create simple or expert audio recordings.  You can also import prerecorded audio files, and edit them or add effects. Audacity recordings can be exported in many different formats including WAV and MP3 files.  Use Audacity to create audio clips or voice recordings for Moodle courses and Mahara pages.  To record and edit audio files using Audacity, you will need a microphone and speakers connected to your computer.

Audacity screenshot