Index: src/music/extmidi.cpp
===================================================================
--- src/music/extmidi.cpp	(revision 25077)
+++ src/music/extmidi.cpp	(working copy)
@@ -79,7 +79,7 @@
 
 void MusicDriver_ExtMidi::SetVolume(byte vol)
 {
-	DEBUG(driver, 1, "extmidi: set volume not implemented");
+	this->volume = vol;
 }
 
 void MusicDriver_ExtMidi::DoPlay()
@@ -87,13 +87,15 @@
 	this->pid = fork();
 	switch (this->pid) {
 		case 0: {
+			char strvol[] = "-A000";
+			sprintf(strvol, "-A%i", this->volume * 6);
 			close(0);
 			int d = open("/dev/null", O_RDONLY);
 			if (d != -1 && dup2(d, 1) != -1 && dup2(d, 2) != -1) {
 				#if defined(MIDI_ARG)
-					execlp(this->command, "extmidi", MIDI_ARG, this->song, (char*)0);
+					execlp(this->command, "extmidi", MIDI_ARG, this->song, strvol, (char*)0);
 				#else
-					execlp(this->command, "extmidi", this->song, (char*)0);
+					execlp(this->command, "extmidi", this->song, strvol, (char*)0);
 				#endif
 			}
 			_exit(1);
Index: src/music/extmidi.h
===================================================================
--- src/music/extmidi.h	(revision 25077)
+++ src/music/extmidi.h	(working copy)
@@ -19,6 +19,7 @@
 	char *command;
 	char song[MAX_PATH];
 	pid_t pid;
+	byte volume;
 
 	void DoPlay();
 	void DoStop();