diff --git a/sonoff/xdrv_91_mp3.ino b/sonoff/xdrv_91_mp3.ino
new file mode 100644
index 000000000..82c778127
--- /dev/null
+++ b/sonoff/xdrv_91_mp3.ino
@@ -0,0 +1,117 @@
+/*
+ xdrv_91_mp3.ino - MP3 Player support for Sonoff-Tasmota
+ Player type: RB-DFR-562, DFPlayer Mini MP3 Player
+ Copyright (C) 2018 Theo Arends
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+
+*/
+
+#ifdef USE_MP3_PLAYER
+
+#include
+
+TasmotaSerial *MP3Player;
+
+#define D_CMND_MP3 "MP3"
+const char S_JSON_MP3_COMMAND_NVALUE[] PROGMEM = "{\"" D_CMND_MP3 "%s\":%d}";
+const char S_JSON_MP3_COMMAND[] PROGMEM = "{\"" D_CMND_MP3 "%s\"}";
+
+enum MP3_Commands { CMND_MP3_PLAY, CMND_MP3_STOP, CMND_MP3_VOLUME};
+const char kMP3_Commands[] PROGMEM = "Play" "|" "Stop" "|" "Volume";
+
+#define MP3_CMD_PLAY 3
+#define MP3_CMD_VOLUME 6
+#define MP3_CMD_STOP 0x0e
+
+uint16_t MP3_Checksum(uint8_t *array)
+{
+ uint16_t checksum = 0;
+ for (uint8_t i = 0; i < 6; i++) {
+ checksum += array[i];
+ }
+ checksum = checksum^0xffff;
+ return checksum+1;
+}
+
+// init player define serial tx port
+void InitMP3Player() {
+ MP3Player = new TasmotaSerial(-1, pin[GPIO_MP3PLAYER]);
+
+ if (MP3Player->begin(9600)) {
+ //serial_bridge_active = 1;
+ MP3Player->flush();
+ }
+}
+
+void MP3_CMD(uint8_t mp3cmd,uint16_t val) {
+ uint8_t cmd[10] = {0x7e,0xff,6,0,0,0,0,0,0,0xef};
+ cmd[3] = mp3cmd;
+ cmd[5] = val>>8;
+ cmd[6] = val;
+ uint16_t chks = MP3_Checksum(&cmd[1]); // calculate out
+ cmd[7] = chks>>8;
+ cmd[8] = chks;
+ MP3Player->write(cmd, sizeof(cmd));
+}
+
+boolean MP3PlayerCmd() {
+ char command[CMDSZ];
+ boolean serviced = true;
+ uint8_t disp_len = strlen(D_CMND_MP3);
+
+ if (!strncasecmp_P(XdrvMailbox.topic, PSTR(D_CMND_MP3), disp_len)) { // Prefix
+ int command_code = GetCommandCode(command, sizeof(command), XdrvMailbox.topic + disp_len, kMP3_Commands);
+
+ if (CMND_MP3_PLAY == command_code) {
+ if (XdrvMailbox.data_len > 0) { // play
+ MP3_CMD(MP3_CMD_PLAY, XdrvMailbox.payload);
+ }
+ snprintf_P(mqtt_data, sizeof(mqtt_data), S_JSON_MP3_COMMAND_NVALUE, command, XdrvMailbox.payload);
+ }
+ else if (CMND_MP3_VOLUME == command_code) {
+ if (XdrvMailbox.data_len > 0) { // set volume
+ MP3_CMD(MP3_CMD_VOLUME, XdrvMailbox.payload * 30 / 100);
+ }
+ snprintf_P(mqtt_data, sizeof(mqtt_data), S_JSON_MP3_COMMAND_NVALUE, command, XdrvMailbox.payload);
+ }
+ else if (CMND_MP3_STOP == command_code) { // stop
+ MP3_CMD(MP3_CMD_STOP, 0);
+ snprintf_P(mqtt_data, sizeof(mqtt_data), S_JSON_MP3_COMMAND, command, XdrvMailbox.payload);
+ } else {
+ serviced = false; // Unknown command
+ }
+ }
+ return serviced;
+}
+
+/*********************************************************************************************\
+ * Interface
+\*********************************************************************************************/
+
+#define XDRV_91
+
+boolean Xdrv91(byte function)
+{
+ boolean result = false;
+
+ switch (function) {
+ case FUNC_PRE_INIT:
+ InitMP3Player();
+ break;
+ case FUNC_COMMAND:
+ result = MP3PlayerCmd();
+ break;
+ }
+ return result;
+}
+
+#endif // USE_MP3_PLAYER