As the simpler of two new Banshee speaker systems from Jensen, the JiSS-330 ($100) packs three speakers and an iPod dock into a single glossy black plastic enclosure with prominent chrome highlights and a matching remote control. The unit promises “surround sound with unmatched volume and precision,” and has video outputs that are compatible with the 5G iPod. Its more deluxe JiSS-550 brother is spotlighted in a separate First Look today.…