Nicecast lets you set up your computer as a streaming server that broadcasts your iTunes music to friends and coworkers over the Internet.

I work in a cubicle with another person and we would both like to listen to the same iTunes music at the same time. But with the music coming out of just one of our computers, we have to turn it up so loud that it disturbs people in other cubicles. Same problem if we were to stream our music to an AirPort Express–equipped stereo. Is there a way that we can have the exact same music coming through each of our individual computers at the same time?

Other than the old-fashioned way of using a splitter cable and two sets of wires? Absolutely! What you’re trying to do is basically create your own miniature radio station that streams music to your coworker, who can then tune in from his or her own computer. Try taking a look at Rogue Amoeba’s Nicecast ($40,www.rogueamoeba.com), which lets you “broadcast” your music to others. Once you launch Nicecast on your computer and click the Start Broadcast button, Nicecast will immediately start broadcasting your audio from iTunes (or any other application that you choose). Your coworker then simply connects to your music stream on his or her computer by going to iTunes’ Advanced menu, selecting Open Stream, and typing in the special IP address that Nicecast gave you.

If your coworker is having difficulty hearing your music, be sure to turn up the volume in your own copy of iTunes. Since your Mac is basically acting as a radio station, any changes you make in iTunes will affect what your listeners hear.

If you’re familiar with configuring firewalls and routers, your friends from outside your office and around the world can also tune into your music stream. And for added fun, Nicecast even lets you fulfill your dreams of being a radio DJ by giving you the ability to insert commentary between your songs and apply real-time audio effects to your music.