Why couldn't we have found this item at the beginning of summer? Far more practical than the MP3 cooler we saw earlier is Cooltone's "Mini-Fridge, CD Player, iPod/MP3 Digital Radio" (whew). We'd list the features, but the name pretty much takes care of the high points.
GeekAlerts does provide the most salient information, however: beverage capacity. And that would be 20 cans or six bottles of wine from the main fridge back home. Consider it the perfect accessory for your MP3 barbecue.