Skech has introduced its new Musicair Bluetooth audio accessories, as well as a pair of new cases for the iPhone 3G and iPhone 3GS. Musicair Home is a Bluetooth stereo adapter, integrating the Bluetooth circuit into an Apple-like wall adapter to eliminate the need to charge. It offers an integrated 3.5mm audio output cable, as well as an included RCA adapter. It sells for $80. Also priced at $80 is the Musicair Travel, an in-car Bluetooth audio solution…