I am about to buy a Mk4 Golf GT-TDI and would like to know the best/easiest way of adding mp3-cd ability to it. It will come with as standard a radio cassette in one bin and the other bin with an add-on cd unit which I assume connects as a cd changer to the radio casssette. Is there a similar cd unit that is mp3 compatible or will I need to do something different like replace the radio cassette or add a cd changer. Ideally I would like to use both bins than store a cd changer under a seat or in the boot etc.