WaveJamr is the least expensive of the Bluetooth-streaming options we’re reviewing today; it’s also fair to say it’s the most cheaply designed. The 1.5” by 1.25” by 0.25” adapter is very light—too light—and the plastic feels inferior. It has one output—the Dock Connector port on the bottom—and the only other interruptions to the plain blue material are the product’s name printed on…