Docking Problems

[stuntbelly]

Does someone make a plug that you can fit over an IPOD Dock plug to reduce it to Walkman size.
I thought it was a good idea but I cant find one anywhere?
Maybe its not possible if the pin configuration is different?
I'm curently using my usb plug to my Sony CMT HX80R but it came with an IPOD dock which rather than throw away I tried to find the above solution

Thanks in advance