Eh, how do I change the instrument "Custom 1" to the Synth Drum beep? And where do I find the command that makes it play Custom 1? (Hoping you understand what I'm trying to say) This is Litterbox MML..

Since you know coding how do you load maps heres the code

Oh no this ain't my program, this is someone else's, I'm just tryin to edit the instruments. I don't know how to load maps. Not the Synth Drum, meant Synth Bass.

oh Well if you dont know you shouldnt be editing & can be fun but not when you have no Idea what your doing not being a hater

You can use MML definition number 274, which corresponds to BEEP's synth bass. Supposedly, every MML number after 255 corresponds to BEEP sound effects. I'm not sure if this holds true for every sound effect, but some do, like the aforementioned snyth bass.