I was playing around on the MazdaUSA site using the "technique" that RX-Nut pointed out about changing the values in the URL to get it to show you the RX-8 info that you otherwise can't select...
(see this thread (http://www.rx8forum.com/showthread.php?s=&threadid=5956) if you don't know what I'm talking about)

Anyway, here's the link (http://www.mazdausa.com/MusaWeb/vlSelectVehicle.action?exterior=ALL&year=2004&interiorCode=&vehicleCode=Rx8&tranCode=&distance=50&vtype=NEW&imageLocation=rx8%2Fimages%2Fphotographs%2Fpho_bui _rx8_ext_red_your.gif&interior=ALL&isFromDealer=true&totalVehicles=11&city=&trans=ALL&incentives=&msrp=25%2C700&trim=ALL&start=1&zip=&isCPOSearch=false&sort=distance&vin=JM1FE173940101965&foundVins=JM1FE173040101448%2CJM1FE173140101863%2C JM1FE173340101900%2CJM1FE173440107432%2CJM1FE17354 0103728%2CJM1FE173640105181%2CJM1FE173740101897%2C JM1FE173740102032%2CJM1FE173840103934%2CJM1FE17394 0101965&modelTrimName=RX-8&dealerId=41179&state=&engineCode=&name=RX8&exteriorCode=&vehicleIndex=9&dealerName=&isComplete=false&engine=ALL) to my car.... How did I get the cassette player and the CD changer? I didn't think that was possible. Secondly, I don't own a single, friggin' cassette. DOH! :confused:

Its possible.

Single CD - Multi CD - MP£ all go in top slot - pick on.

Tape - Minidisk both go in bottom slot - pick one.