The colored plastic casing and stand-at-attention antennae make it look like something you might find hidden at the bottom of your favorite breakfast cereal. But the Kima, from Akoo.com (708/583-9600, www.akoo.com ), is a tad more sophisticated than the free decoder ring that came with your corn flakes. Kima’s base unit transmits audio wirelessly from your computer – or any audio source with an eighth-inch stereo mini-jack – to the device’s remote unit. Place the receiver next to a stereo up to 1,000 feet away, and tune it to one of the two FM frequencies Kima supports. Your stereo will belt out that MP3 playlist of thrash-metal polkas you’ve been storing on your Mac. At $150, Kima costs a bit more than running a cable from you computer to your stereo. But its dancing lights will give your party guests something to enjoy long after the nachos run out.