Nearly a quarter of all Americans now have an iPod or other MP3 player.
But if you want to listen to your music unplugged, Consumer Reports' Tom Maung tested ten of the newest speaker systems.
Since what's most important is sound quality, Tom tested by having each system play a mixture of all audio frequencies, called pink noise.
The Cambridge Sound Works Radio CD 745i for $350 that also plays CDs and comes with a clock radio, earned top-ratings, with excellent sound quality and lots of features.
Also the Altec Lansing that plays video, Consumer Reports found its sound quality is also impressive. It's the $300 In Motion, model number iMV712.