Custom Song track looping problem

The $ command is where it will loop back to in the track, so if you want it to loop at a specific point you'll need to move that $ that's in the channel header to the exact spot you wish for it to loop back to. Sometimes you'll need to reset/re-add the correct octave when looping in the middle of a track because it will have a previous (incorrect) octave set from earlier, before it loops. Also, depending on how the midi was made you may need to add additional rests at the end of the track if it needs it before looping, to buffer/time it correctly with the other tracks.

Looping correctly is definitely one of the toughest things to get down when it comes to this stuff. I found a trick to make it much easier for these kind of looping circumstances - when editing the midi, I add in a note (a highest octave C so I can spot it easily) to the exact spot I want it to loop back to, and then when it's converted to MML data I remove that note and put the $ there. That way you don't have to do trial and error placing the $ at different spots or adding rests. I also use this technique to easily set the end point loop, at the end of a song, so everything lines up correctly, for those midis that keep playing and playing, or fade out.

So which song is it if I may ask?