The tutorial you posted apears to be for FlashMX and Jesse Stratford is a true Flash guru. Flash works very well with remoting. I am not exactly sure what the download issue with the files might be. You would need to contact the author of that tutorial to make sure they are MX files and not Flash8 posted mistakenly.
With regards to Flash remoting, here are a couple links that might prove useful...
Good site with lots of demo files...
AMFPHP resource site...
hope it helps
A mind once stretched by a new idea never regains its original dimensions.
- Oliver Wendell Holmes