“2.1” means that this system includes left and right speakers plus a subwoofer. In the ProMedia system, the subwoofer contains the power supply for the other two speakers. The simple installation begins with setting up the left and right speakers wherever you want within the 30-foot range of where you’ll use your laptop or desktop computer. Connect them to the subwoofer, and plug it into a power outlet. Then plug the transmitter—a tiny device that looks like a thumb drive—into one of the USB ports on your computer.

Once you’re all hooked up, launch iTunes—or Pandora, or another source of your choosing—and play some music. If you have an iPod Touch or an iPhone, you can also install Apple’s Remote app to turn your handheld device into a remote control for iTunes.

Wireless, really?

For those of you who can’t forget the disastrous early attempts at wireless sound, keep in mind that Apple has been doing it well for years now through the audio‑out port on the Airport Express. Wireless sound has come a long way; it’s done digitally now, like good 2.4-GHz cordless phones, so it works well and sounds terrific.

Go give these a listen, and tell me what you think. (My bet: you’ll want to leave the store with a set of them.) And for those of you on a tight budget, I’ve found the non-wifi version of the same system for under $115.

Enjoy!