Useful for controlling the individual volume levels of apps - I use it to boost levels in final cut.

This is a really useful app, great for grabbing bits of streaming audio, or scheduling live broadcasts. The Pro version allows you to set lots of stuff and do some processing with its support for plug-ins. The Skype capture with one channel for the sender and the other for the receiver is very useful.

Really, really useful app. Wouldn't be without it.

Awesome scheduling features. I use it every morning to record the news before I get up. I sync up my iPod before I leave the house and listen on the subway. It's like TiVo for internet radio.

I used to use Ambrosia's WireTap, but this has so many more options, including the Karaoke filter I could previously only find in the (discontinued) app Audion. The interface is nicer, too.

Essential if you listen to anything on your Mac. Worth every penny thousands of times over.

Totally awesome. I use it to record foreign radio stations for listening practice.

Can be used to improve sound quality of downloaded music, although this does remove the DRM :-)

Great for recording audio from any application inside your computer or from any coreaudio external sound input.
+ scheduled recording options (handy for recording webradio)
+ record in mp3 or aiff formats
+ insert vst or audiounit plugins in the signal-chain.

great for converting cassettes to mp3.