So how would I normally say in German "I run this program" or "I launch this program" (on a computer). Dict.cc gives me "ausführen" and "laufen lassen" for "to run a program". Both sound quite difficult to pronounce. Is there an easier (colloqial) variant? Intuitively I would probably say "Ich ranne" or "Ich lasse los" or "Ich lasse auf"? Does it make sense?
You may not be a fan of »laufen«, but it would suit the purpose when it comes to computer programs:
Ich lass’ das Programm laufen. (I let the program run.)
While “run” also describes an actually running program (at runtime you might say), the question is more about starting a program. With “launch” being a cognate for “start”, you probably would say:
Ich starte das Programm. (I start the program.)
Neither of „Ich ranne“ (I ran?), „Ich lasse los“ (I let go) and „Ich lasse auf“ (I let on?) makes sense regarding starting computer programs. Perhaps you can make friends with »Programm starten«, because if there are no errors, starting a program also means running it afterwards.