Ardour - Free Open Source Digital Audio Workstation

[rawvoicemarketing]

This looks to be a big step up from Audacity. May be a bit much for a podcaster. Audiophiles could have some fun with this though.

"Ardour is a digital audio workstation. You can use it to record, edit and mix multi-track audio. You can produce your own CDs, mix video soundtracks, or just experiment with new ideas about music and sound."