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"  Tivoli Audio iSongBook Tell guests to B.Y.O.i.\u2014bring your own iPod. With this white-hot digital music system that accepts all versions of Apple&amp;#039;s iPod, including the new Nano, partygoers can broadcast their favorite tunes for everyone to hear (and recharge their players to boot). The 6-inch-high portable unit features a detachable speaker, AM/FM radio, and alarm clock. $330. 877-297-9479, tivoliaudio.com.   Optoma MovieTime DV10 DLP projector Gather the gang for a supersize screening of Home for the Holidays. Pop a DVD into this digital projector\u2014equipped with two 5-watt speakers\u2014to cast a 3- to 30-foot-wide image onto a wall or screen. And since the whole package weighs just 8 pounds (and comes with a handy canvas tote), you can easily take the show on the road. $1,499. 888-942-2929, optoma.com.   Sharp XL-MP150 micro system Transform your living room into a dance hall with this mini audio system, whose speakers pump out not only music but also blue LED lights that pulse to the beat. The louder the tunes, the brighter the color\u2014so go ahead and turn up the volume. And dust off that high school mix tape: In addition to a five-tray CD changer and AM/FM radio, this baby features a cassette deck. Rock on. $169. 800-237-4277, sharpusa.com.   IVL On-Key Karaoke VideoMaker Help your pals release their inner Cher. Place this silver karaoke machine on top of your TV, put on the wireless headset (and perhaps a leather catsuit), and belt out &amp;quot;If I Could Turn Back Time&amp;quot; as the lyrics\u2014and your performance\u2014appear on screen. Use the remote to double your voice for instant harmony, change the key to suit your range, or even sound like a member of the opposite sex. The system holds 400 songs, and hooks up to your VCR so you can videotape the silliness and have guests leave with their very own copies. Party favors have never been so high tech. $199. 866-786-6539, onkeykaraoke.com.   OrangeSkin Mathmos space projector Give your friends flashbacks to their lava lamp college days with this groovy gizmo that projects slowly moving colors onto a ceiling or wall. Just slide a gel-filled cartridge into the space- age-look system and dim those lights. Cartridges ($18 each) come in blue-green, blue-red, violet-green, and violet-red. $135. 773-394-4500, orangeskin.com. "^^<http://www.w3.org/2001/XMLSchema#string>
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