Koss has always had some weird and wonderful idea - enter the Striva Tap, a wireless IEM that uses WiFi to stream music directly from the Internet (via MyKOSS.com) to the two separated earpiece. Yes, from anywhere that has a WiFi access. The two earpieces will each has a microprocessor to keep everything in sync between them. To make sure you can enjoy your music out of the house with no WiFi, it even comes with a tiny battery powered WiFi adapter that will take analog signal (i.e. iPod's line-out) and translate it to WiFi signal for you. Not cheap though, it is currently available at US$500. There is also a full size headphone version called the Striva Pro, which is cheaper at US$450.