Unfortunately not,. but it’s very simple, here is the “patch” for the leds.

*** z_SetupLoop.ino

below: if (VIC_irq_request == 0) {

->

#ifdef USE_LED_VOICE

if (Gate_bit_1) {
digitalWrite(LED_VOICE_1, HIGH);
} else {
digitalWrite(LED_VOICE_1, LOW);
}

if (Gate_bit_2) {
digitalWrite(LED_VOICE_2, HIGH);
} else {
digitalWrite(LED_VOICE_2, LOW);
}

if (Gate_bit_3) {
digitalWrite(LED_VOICE_3, HIGH);
} else {
digitalWrite(LED_VOICE_3, LOW);
}
#endif

*** STM32SID_FOLDER_PLAYER_SDCARD_BUTTON3.ino

// #define USE_LED_VOICE // enable LED voices on PA2 – PA3 – PA4 – STM32F401CCU6
// enable LED voices on PB5 – PB7 – PB9 – STM32F407VET6

// #define LED_VOICE_1 PA2 // STM32F401CCU6
// #define LED_VOICE_2 PA3 // STM32F401CCU6
// #define LED_VOICE_3 PA4 // STM32F401CCU6

#define LED_VOICE_1 PB5 // STM32F407VET6
#define LED_VOICE_2 PB7 // STM32F407VET6
#define LED_VOICE_3 PB9 // STM32F407VET6

*** 20_hardware.ino

below:

#ifdef BUTTON_NEXT
pinMode(BUTTON_NEXT, INPUT_PULLUP);
#endif

->

#ifdef USE_LED_VOICE
pinMode(LED_VOICE_1, OUTPUT);
pinMode(LED_VOICE_2, OUTPUT);
pinMode(LED_VOICE_3, OUTPUT);
#endif

Sorry, components list added to the post.

Very good job, just a question what are the references of your Arduino STM32 board and your SD Card board
Best regards
Manuel