MIDI2GEMS:actually... it is MIDI 2 Deflemask 2 GEMS (GEMS and can be RRR too... i mean Sound Images 1.2).
converter have some pack of midi like instruments, but they are not very well... but we have that we have. idea was make one-click software, but it was a little dificult

too many nuances. why it need some third party soft - Deflemask? well... my GEMS tracker probably will never be finished. no have any inspiration for it. i am always say: i am not a programmer i am just manager, who collects ideas and make some mix of it. so it is not a final, ready to eat programm - it is just pack of ideas, what should be in this type of software. so my tracker is not very userfriendly and i have no skill to make same interface as Deflemask have. only far far far from Deflemask

my will be too woodly software. so that is why i am no have inspiration to finish that, because i am already know my skills and see that programm in my head - too woodly. so that is why i am set Deflemask as middle part for converting. tracker's options of Deflemask is nice for that case and can help to fix any problem's places after converting. and no one is restrict to you use not a midi, but Deflemask from begining and make some songs directly in it, and then convert melodies into GEMS. and by my fault it is comes too into longbuild case - driver of Rock n Roll Racing was changed into GEMS and Alianger make a nice covers for that romhack. i am just need to convert it into the game... but! Alianger is a crazy man - he use all Deflemask's features that is exist! his covers have a millions effects... some slides, pedals, echoes, and etc thing. convert all of that is too dificult for me. i am like stright notes. with it no any problem

works 1 in 1. but with effects... my variants sounds as drunk cats... i have no any formulas of that effects. only blind imaginations.
converter have urls with youtube video about explanations how to work with midi - selecting channels, mixing channels, selecting volumes, transport, select melody's size and etc thing, that i think should be here. and now new "d" version have only two small changes - when you select folder for GEMS - it want to get .cfg file, not as folder before. another one - it will cut midi file into 127 full notes, if midi too long. i am set 1 Deflemask's pattern = 1 full note length. so when it is too big melodie - it cut end of melodie. and show message about it. converter was made for GEMS switcher with GEMS online database. just need to set path into one of that millions folder and convert. that process i am show at the end of some another video (above)... probably Bloodshot.
converting into RRR - works, but need a special rom builder. it is no free access. i am no have permision to share it. and result not very well too... as far i am remember - some effects is didnt finished too. and bpm recount work wrong. i have same bpm for Billy Idol song and Final Countdown of Europe covers of Alianger - but after converter - driver play them with different bpm

so one song play fine, another too slow. final result of converting of RRR have comments in a file. so it can be used for study driver by your own, if you interest what commands what means. if GEMS will make sequence file and instruments and modulation and samples - as separate files, but RRR will make one .asm file. it will have already have instrument's settings at the header. and that driver is bored by two things: it is not used PSG and size of full melody can be only up to 3kb! and when plays Larry's samples - melody is interrupt. Ti is make some changes into that driver. it was two ways of hack: samples of Larry not interrupt songs, but it have only 3kb per song (it some not documental things of cpu). and second way - songs can be up to 32kb, but Larry will interrupt songs, as original driver do (that is why RRR converter have $8000 switcher). but with changing driver RRR into GEMS - tyres scratch sound have some cliping

i am didnt fix it whatever i am do. probably it need to edit code itself, where is call that sound. maybe it need just pause between recalls more bigger, than it is. idk. i am not a romhacker

do not rush to blame that Deflemask... yes, it is not a free program and ValleyBell not give a blessing for this tracker... but earlier it was free. and that legacy version still free and works fine and can be downloaded. it just no updates anymore. it have some glitches, but works fine. and main thing what it should do - it do. so... and second one: actually you no need that Deflemask to make convert from MIDI 2 Deflemask. just ignore that error, where system cant launch dmf file after convert, set that converted file in a window - bottom part of program and convert into GEMS's folder, what you need. but i think better to fix problems after converting inside of Deflemask and convert file only after it. for example you can change instrument to your own. because, as i am say before - presets is not very well (most of them send me MaliceX

and i am still use them)... or change some notes, or volumes. many what it can be fixed.