How to Broadcast Radio from Your Computer

Steps

Determine who your intended audience is. If you are in the USA, the FCC has explicit rules that govern how much power you can use to get your message out.

If broadcasting to your home stereo or a backyard boombox is what you seek, purchase an MP3 FM radio transmitter.

Plug the MP3 FM radio transmitter into a speaker or headphone jack on your computer.

Load a playlist into Windows Media Player or another media player application and click play.

Go enjoy your tunes.

Use a PCI card

Purchase an FM transmitter that plugs into a PCI slot in your personal computer.

Connect the jumper cable from the speaker out/headphone jack on your PC sound card to the audio input on the transmitter.

Load the included software.

Pick an empty frequency to transmit on.

Load your favorite playlist into a media player software and click play.

Go enjoy your tunes.