Logitech today previewed its X-240 speaker set, a unique approach to the problem of tethering handhelds to their host computers, according to Electronista. "The central control unit of the system, while providing quick access to volume controls, also incorporates a universal cradle that charges and synchronizes most handhelds through a USB connection to the host Mac or Windows PC." The report says that special adapters are included for third, fourth, and fifth-generation iPods as well as the iPod nano and Microsoft's Zune; the X-240's dock also works with cellphones, PDAs, and other portable hardware. The 2.1-channel system delivers 25W of sustained power and will ship in April for $50.