Already, new peripherals are popping up to take advantage of the new features in Apple's updated iPod line-up
, with Polk Audio's I-Sonic Entertainment System
2 packing a poor man's equivalent of the Starbucks song purchase feature
over in-store WiFi. When songs are playing over the built-in HD Radio, users can press a tag button, which creates a custom playlist on docked iPods, allowing songs to be purchased later when at a computer. The ES2 also features XM Connect & Play capability, a CD/DVD drive for audio playback, an alarm clock mode, and 360-degree sound, whatever the hell that is. The ES2 hits next month for $499.