is xcarlink Car MP3 kit compatible with 2002 camry?

Hi,

I was wondering if this mp3 kit is compatible with my 2002 camry JBL CD player stereo. Note that it does not have a CD changer. Just the CD player. I am not sure how many pins the stereo has. xcarlink claims that it can fit in a 5+7 pin which the CD changer has.

http://www.xcarlink.com/show_info.asp?product_ID=352    

Thanks in advance for any information.