First you need to know which memory region the game need. I use a machine-language game ( not basic ) called Lunar Lander with .wav extension which use the memory region " 300.A00R ".
Start Apple 1 emulator Type " C100R " Return Type " 300.A00R " Return Play Tape Stop Tape Type " 300R " Return
C100R is the command to start the cassette interface's mini-monitor. As I said, the memory region address can be different from software to software. It can be also, it exist the same software titles which use different addresses. However, if you find any software in the internet, you will find also the note for the memory region.