Libratone has announced Zipp ($399), a portable speaker that can use AirPlay with or without an existing Wi-Fi network. The Zipp can connect directly to AirPlay devices using PlayDirect technology, establishing its own wireless connection when necessary. It also sports a cylindrical design, so it can be placed in the center of a room without facing away from listeners. The Zipp gets up to eight hours of playback time when used in a wired mode, and…
