There is a link to one on the page that I pointed you to:

http://www.mock.com/receiver/audio/

You then need tools to merge the kernel into the receiver.arf file, if you don't have a Linux box handy then you will need one of:

- my Receiver Tweaker which only replaces zImage files in arf files
- Frank's tool which is more flexible, it can be used to add other files to the arf file (sorry don't have the link, try searching on the bbs)
- a copy of tar from the Cygwin's Unix tools for Windows