Windows 7 introduces a useful new feature that allows you to listen to your MP3 player or other audio device through your computer’s speakers without installing any additional software. Friendly Computers has more information below…
Windows expert Ed Bott finds a useful feature in Windows 7: you can play an external audio device through your computer's speakers without any extra software using a simple configuration setting.
To activate the setting, you'll need to plug the device into the Line In or microphone jacks, head to the Sounds panel, and then find the new Listen tab under the input jack. You'll be able to direct the input from your iPod or other device to play directly from your speakers, an extremely useful feature if you've got a nice set of speakers connected to your PC.
Readers will note that you can always play your iPod's music using iTunes, but this method works even if you connect a friend's iPod or any other sound input you would like to use—and this method doesn't require using any software.
Source: http://lifehacker.com/5326409/play-your-ipod-through-your-windows-7-pcs-speakers
