Thanks to Cheryl Capozzoli for sharing this one via email.
VERY nice, *GPL licensed, audio app for Windows and Mac and Linux. It allows you to edit multiple tracks… Well, here’s what the site says:
“Traverso is a complete solution from recording to CD Mastering. By supplying many common tools in one package, you don't have to learn how to use lots of applications with different user interfaces. This considerably lowers the learning curve, letting you get your audio processing work done faster!”