www.installdr.com has a good article on how to get to your audio system.

why did you get the oem cd player??

its down near teh cupholder so its very difficult to change the cd
1. when you're driving
2. when you have cups in teh cuplholder

i have it and the only reason i dont change it is that it sounds fine for my needs and that its hard to see from the ouside, theft deterrent : P