These sound files are retrieved from Alice.org, Carnegie Mellon University.
The Alice Project created them as royalty free resources for educational and recreational uses in Alice projects. All sounds in the Alice Sound Library are in the public domain as long as they are used using the accreditation found at the bottom of Alice.org pages.
The sounds archive is a generous gift from Alice.org and is available by clicking on the following link:
Alice Sound Library Archive .zip (38.1 MB)
Creating your own sounds
Alice allows you to record sounds in the tool itself. Or you can import any .wav formatted audio files.