For rfree recording:
Link to
SoundStudio 2.2.4via Version Tracker
Free cross platform audio editor For a free product, it really is good. Add the LAME plug-in for MP3 conversion. It is VST and NYQUEST plug-in compatable. There are at least a few hundred plug-ins that it can use-so have at.
If you need audio routing
Cycling 74 Software offers SoundFlower for free. It's a free audio routing program, and it's not as easy as
Audio Hijack, but it's free. Use in conjunction with SoundFlower Bed- also free.
Jack Tools also offers free routing. There are complaints that it is glitchy, but I havn't had problems. I use SoundFlower (see above) though.
AudioHijack is a great router/recorder. It's easy and allows for easy routing and recording. For free you can get
SoundSource which will add basic input and output selection to your menubar.