diff --git a/js/smarter-ui.js b/js/smarter-ui.js
index 9d5192f9a1441f033c5c8e4c1d72cc63ec9fae8e..8bd72a59638a107322bb9c22b98f3a43dbced26b 100644
--- a/js/smarter-ui.js
+++ b/js/smarter-ui.js
@@ -10,9 +10,9 @@ VEHICLE_BUS = 3;
 
 AUDIO = {};
 // Wav files are also available.
-AUDIO[VEHICLE_CAR] = 'audio/car_marimba.mp3';
-AUDIO[VEHICLE_TRUCK] = 'audio/truck_glockenspiel.mp3';
-AUDIO[VEHICLE_BUS] = 'audio/bus_mallets.mp3';
+AUDIO[VEHICLE_CAR] = 'https://smarter-data.tt.utu.fi/audio/car_marimba.mp3';
+AUDIO[VEHICLE_TRUCK] = 'https://smarter-data.tt.utu.fi/audio/truck_glockenspiel.mp3';
+AUDIO[VEHICLE_BUS] = 'https://smarter-data.tt.utu.fi/audio/bus_mallets.mp3';
 
 SEP = ',';
 SERVER = 'wss://smarter-data.tt.utu.fi/ws/';