| I appologize for having to ask this, but it is hard to search the audio forum without being able to use E30 as a search term.
A friend on mine, a professor actually, asked me about their E30. She is interested in putting in a CD player or changer. What factory options does she have or even better, what is the most economical way to acomplish one or both of these goals? I appreciate the help, especially seeing how little I know about the E30. | 
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