diff --git a/static/qrplay/v3d.html b/static/qrplay/v3d.html
index 0597cfb..94c8e2f 100644
--- a/static/qrplay/v3d.html
+++ b/static/qrplay/v3d.html
@@ -27,12 +27,13 @@
 <BUTTON onclick="
 F.A?.close();
 F.A=A=new AudioContext;
+D=Date.now();
 // kill some time for the audio context to start
-S='@qx@'+F.value.toLowerCase();
+S='@'+F.value.toLowerCase();
 // stack
 B=[];
 // stack variables
-K=O=T=Z=L=0;
+K=L=O=T=Z=0;
 U=137;
 V=40;
 // samples
@@ -94,7 +95,7 @@ M=_=>{
 	// play sample
 	S=C[a]+S.slice(s--);
 	
-	// loop
-	(S=S.slice(s))&&setTimeout(M,50)
+	// loop (but don't get too far ahead)
+	A.state!='closed'&&(S=S.slice(s))&&setTimeout(M,1000*T-Date.now()+D);
 };M()
 ">#play</BUTTON> <BUTTON ONCLICK=F.A.close()>#stop