As I said, just use the multitexturing material that comes with ~MtlFX.c. Include this material library and attach the action fx_terraintex (or how it is called). When you open the code file and scroll down to this action, you will see some instructions above it on how to set up your terrain.
"Falls das Resultat nicht einfach nur dermassen gut aussieht, sollten Sie nochmal von vorn anfangen..." - Manual
