--- libao2/ao_jack.c.orig	2007-10-07 21:49:27.000000000 +0200
+++ libao2/ao_jack.c	2008-04-26 00:26:55.000000000 +0200
@@ -207,11 +207,15 @@
 {
   mp_msg (MSGT_AO, MSGL_FATAL,
            "\n-ao jack commandline help:\n"
-           "Example: mplayer -ao jack:port=myout\n"
-           "  connects MPlayer to the jack ports named myout\n"
+           "Example: mplayer -ao jack:dest=myapp\n"
+           "  connects MPlayer to the first ports of 'myapp'\n"
+           "Example: mplayer -ao jack:dest=myapp:port=input\n"
+           "  connects MPlayer to the ports named 'input' of 'myapp'\n"
            "\nOptions:\n"
-           "  port=<port name>\n"
-           "    Connects to the given ports instead of the default physical ones\n"
+           "  dest=<destination name>\n"
+           "    Connects to the named destination instead of the sound card\n"
+           "  port=<port name prefix>\n"
+           "    Connects only ports with names starting with the given prefix\n"
            "  name=<client name>\n"
            "    Client name to pass to JACK\n"
            "  estimate\n"
@@ -220,9 +224,12 @@
 
 static int init(int rate, int channels, int format, int flags) {
   const char **matching_ports = NULL;
+  char *dest_name = NULL;
   char *port_name = NULL;
+  char patt [256];
   char *client_name = NULL;
   opt_t subopts[] = {
+    {"dest", OPT_ARG_MSTRZ, &dest_name, NULL},
     {"port", OPT_ARG_MSTRZ, &port_name, NULL},
     {"name", OPT_ARG_MSTRZ, &client_name, NULL},
     {"estimate", OPT_ARG_BOOL, &estimate, NULL},
@@ -252,9 +259,20 @@
   jack_set_process_callback(client, outputaudio, 0);
 
   // list matching ports
-  if (!port_name)
-    port_flags |= JackPortIsPhysical;
-  matching_ports = jack_get_ports(client, port_name, NULL, port_flags);
+  if (dest_name && port_name) {
+      sprintf (patt, "%s:%s", dest_name, port_name);
+  }
+  else if (dest_name) {
+      strcpy (patt, dest_name);
+  }
+  else if (port_name) {
+      strcpy (patt, port_name);
+  }
+  else {
+      port_flags |= JackPortIsPhysical;
+      *patt = 0;
+  }
+  matching_ports = jack_get_ports(client, patt, JACK_DEFAULT_AUDIO_TYPE, port_flags);
   for (num_ports = 0; matching_ports && matching_ports[num_ports]; num_ports++) ;
   if (!num_ports) {
     mp_msg(MSGT_AO, MSGL_FATAL, "[JACK] no physical ports available\n");