Curious__George writes "I'm excited about a couple of new tools for audio for Mac OS X. One is the freeware WireTap from Ambrosia, which allows you to record any audio playing on your Mac, saving it to a file for later listening or processing.
Its functionality will be built into an upcoming edition of Ambrosia's Snapz Pro X screen capture product. The other is a product that will be shipping by the end of the summer from Griffin called RadioSHARK (retail: $49.95), which is essentially a radio TiVo for your Mac: a software-controlled AM/FM radio that allows you to record radio programs (either local or Internet broadcast). I'll never miss a broadcast of This American Life again!"
Curious__George might also get excited about the new Detour
from Rogue Amoeba
-- makers of AudioHijack
, a predecessor to WireTap that has more capabilities -- which allows detouring sound output from different apps to different devices.