Index: Slim/Utils/Alarm.pm
===================================================================
--- Slim/Utils/Alarm.pm	(revision 23187)
+++ Slim/Utils/Alarm.pm	(working copy)
@@ -63,6 +63,9 @@
 my $DEF_ALARM_SCREENSAVER = 'SCREENSAVER.datetime';
 my $alarmScreensaver = $DEF_ALARM_SCREENSAVER; 
 
+# URL to use when an alarm sound fails to play and we're connected to SN
+my $SN_FALLBACK_SOUND = 'loop://www.squeezenetwork.com/static/sounds/effects/steam_train_whistle.mp3';
+
 # Hash storing the playlists that alarms can use.  Keys are playlist URLs.  Values are the string descriptions for each URL.
 # Values that should be passed through client->string are surrounded with curly braces.
 # e.g. 
@@ -1026,11 +1029,17 @@
 
 	$log->debug('Starting fallback sounds');
 	# Would be nice to have some alarm tones to fall back to (Bug 8499).  For now, just
-	# grab 10 random tracks and play them
-	$log->debug('Playing 10 random tracks');
-	my @tracks = Slim::Schema->rs('track')->search({audio => 1}, {rows => 10, order_by => \'RAND()'})->all;
-	my $request = $client->execute(['playlist', 'loadtracks', 'listRef', \@tracks ]);
-	$request->source('ALARM');
+	# grab 10 random tracks and play them or use a sound effect if on SN
+	if (main::SLIM_SERVICE) {
+		$log->debug("Playing $SN_FALLBACK_SOUND");
+		my $request = $client->execute(['playlist', 'play', $SN_FALLBACK_SOUND]);
+		$request->source('ALARM');
+	} else {
+		$log->debug('Playing 10 random tracks');
+		my @tracks = Slim::Schema->rs('track')->search({audio => 1}, {rows => 10, order_by => \'RAND()'})->all;
+		my $request = $client->execute(['playlist', 'loadtracks', 'listRef', \@tracks ]);
+		$request->source('ALARM');
+	}
 
 	if ( $prefs->client($client)->get('alarmfadeseconds') ) {
 		$log->debug('Fading volume');