Not only does it sound great, but I can plug my iPod directly into the auxiliary jack and listen to music that way. The Fit combines the iPod integration with an interesting interactive console. It is designed well: the display is bright, easy to read and frequently used buttons are placed near the driver including a large knob used for changing modes (aux, cd, fm/am) and sound settings.
When I first saw the knob, I thought it was a bit obnoxious but the more I used it, I realized that since I change modes often, it was nice to have it nearby and prominent. Also, the large buttons make it easy to hit the 'target' while driving. One gripe is that sometime my palm will hit the center button (used for volume and power) and shut the system off. I just wish I had waited longer for the available navigation system. Overall, the audio system provides a great music user experience.