ESPtoy is free for non-commercial use, built for 64-bit Windows Operating Systems. I do have a 32-bit version now also, if you would like to try it.
More information about ESPtoy: http://waringworld.com/esptoy/README.html
I have been having some auto-responder problems. If you do not get an email with a link to ESPtoy after a few hours, email me: email@example.com.