--- libao2/ao_jack.c.orig	2004-10-06 16:53:57.727391270 +0100
+++ libao2/ao_jack.c	2004-10-06 16:56:38.352316988 +0100
@@ -34,6 +34,7 @@
 long JACK_Write(int deviceID, char *data, unsigned long bytes); /* returns the number of bytes written */
 long JACK_GetJackLatency(int deviceID); /* return the latency in milliseconds of jack */
 int  JACK_SetState(int deviceID, enum status_enum state); /* playing, paused, stopped */
+int  JACK_SetAllVolume(int deviceID, unsigned int volume); /* returns 0 on success */
 int  JACK_SetVolumeForChannel(int deviceID, unsigned int channel, unsigned int volume); /* return 0 on success */
 void JACK_GetVolumeForChannel(int deviceID, unsigned int channel, unsigned int *volume);
 //
@@ -134,7 +135,14 @@
 				"AO: [Jack] JACK_Open() failed, error %d\n", err);
 		return 0;
 	}
-	
+
+        err = JACK_SetAllVolume(driver, 100);
+        if(err != ERR_SUCCESS) {
+		// This is not fatal, but would be peculiar...
+                mp_msg(MSGT_AO, MSGL_ERR,
+                                "AO: [Jack] JACK_SetAllVolume() failed, error %d\n", err);
+        }
+
 	ao_data.format = format;
 	ao_data.channels = channels;
 	ao_data.samplerate = rate;