Saddened by JBL's increasingly conservative iPod audio system designs? Those looking for something equally spacey and curvy now have a new option in Edifier's iF500 ($250, aka Luna5 Encore): it's a massive iPod-docking speaker system in the shape of a large black moon, packed with five speakers -- twin 2.5" tweeters, two 2.75" midrangers, and a 5.75" woofer, powered by a 55-Watt amplifier. Fabric on front with a glossy black or white back and matching…