My buddy has three Apple AirPort Express’s so he can have music in multiple rooms.  There are also plenty of other options when it comes to sourcing music into several rooms.  Here’s one that will at least have you telling somebody about it.  The Bless AutoMatica Remote Controlled iPod Car would be a blast to chase your cat around the house cranking Cat Stevens.  Looking very back heavy, a household with hardwood floors would obviously do better with this than a carpeted one.  A Uhaul trailer subwoofer would be a fun addition to this but I honestly think this device would have better traction if it was an off-road vehicle of some sort.  At just over $400 dollars, this thing will probably only be seen on the set of the new Silver Spoons remake.

[Coolestgadgets via ChipChick]