I I recently got a 2003 E320 wagon (a W210). It has this COMMAND console, the only thing I don't like so far; I prefer my iPhone's GPS and mapping, and I don't have to stop listening to music. I'd like to get rid of it and replace it with (for example) a 6-disk changer and more storage space.

Has anyone done this retrofit? Alternately, are there multi-disk systems, or iPod systems, that will fit right into this space?

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2003 E320 wagon, ~80k, "Sputnik"
1987 300 SDL, ~160k, "The Pimp Daddy" (sold April 2010)
1984 300 TD, ~200k, "Das Boot" (Demised March 2008)