diff --git a/supercollider/osc_receiver.scd b/supercollider/osc_receiver.scd
index 517caab..069c28e 100644
--- a/supercollider/osc_receiver.scd
+++ b/supercollider/osc_receiver.scd
@@ -4,21 +4,21 @@
 
 s.boot;
 s.waitForBoot {
-    
-    // Define synth on the server (2-second ring)
+
+    // Define synth on the server with long attack and decay
     SynthDef(\sineTone, {
         |freq = 440, amp = 0.15|
         var env = EnvGen.kr(
-            Env([0, 1, 1, 0], [0.05, 0.1, 1.85], \sin),
+            Env([0, 1, 0.8, 0], [2, 3.0, 3], \sin),
             doneAction: Done.freeSelf
         );
         Out.ar(0, SinOsc.ar(freq) * env * amp);
     }).add;
-    
+
     // Wait for synth to be added to server
     s.sync;
-    
-    // OSC handler for /freq messages
+
+    // OSC handler for /freq messages - explicitly bind to port 57120
     ~oscHandler = OSCFunc({ |msg, time, addr, recvPort|
         if (msg.size >= 3, {
             var freq = msg[2].asFloat;
@@ -26,11 +26,11 @@ s.waitForBoot {
                 Synth(\sineTone, [\freq, freq, \amp, 0.15]);
             });
         });
-    }, '/freq');
-    
+    }, '/freq', nil, 57120);
+
     "OSC receiver ready on port 57120".postln;
     "Click nodes in webapp to play".postln;
-    
+
     // Keep alive
     while { true } { 10.wait; };
 }
\ No newline at end of file