ShoqBox PSS120 [Edit]

This is actually an innovative idea: It is an MP3 player with integrated speakers, but it is open for variation such as FM tuner, internal flash memory and the ability to plug other MP3 devices in for a broader selection of tunes. This device weighs in at less than a pound, just over seven inches long and is available from $100 to $150 depending on retailer and amount of flash memory.