Detour lets you control where audio from all your programs is going. Whether you send it to your speakers, your headphones, or mute it all together, you're in charge.

Circuitous Audio: Technically speaking, Detour allows you to send audio to different output devices on an application-specific basis. What does that mean exactly? It means you can...
• send music from iTunes to your external USB speakers and keep the annoying beeps and blips of iChat going through your computer's built-in speaker.
• mute any application's sounds all together.
• change the volume of some applications relative to others. Make your email client's alerts quieter, and you'll never again be jarred from work just to receive spam.

When you use Detour, you can choose between your speakers, headphones, built-in speaker, iMic, MiniDisc player or anything else which the system sees as an audio output and send it the audio from a specific application. Along the way, you can adjust the volume as well.

Requirements:
OS X 10.1 - 10.4
PPC

Limitations: Detour has been retired from active development. It is now freely available for use on PowerPC-based computers. and will automatically register itself, enabling unlimited use. If needed, the below license may be used:
Name: Rogue Amoeba Detour Complimentary
Code: CFRZ-964632-5940