AudioPatch will allow you to patch the sound from your computers line input to its line output, and provide the ability to control its volume level right from your iPhone/iPod. This gives AudioPatch many possible uses such as controlling a stage microphone while away from the control board, or controlling recording or playback volume of almost any audio source.
AudioPatch is very simple to set up and use. Install the tiny AudioPatchMac application (included) on your computer. Plug your audio input and output into your Mac. Then just launch AudioPatch on your iPhone/iPod. With one click you will be able to control your sound from anywhere within range of your wireless network. If you do not have an existing wireless network available you can set up an ad-hoc wireless network with no extra equipment required (instructions included).
Requirements:
A Mac running OSX 10.5 (Lepoard) with wifi capability
Download the Mac application at: http://www.jacware.com/iphone/audiopatch/audiopatchmac.dmg