successful ytmnd playback

tv/js/vendor/util.js

@@ -3,4 +3,16 @@ function rand(n){ return (Math.random()*n) }
 function randint(n){ return rand(n)|0 }
 function randrange(a,b){ return a + rand(b-a) }
 function randsign(){ return random() >= 0.5 ? -1 : 1 }
-function choice(a){ return a[randint(a.length)] }
+function choice(a){ return a[randint(a.length)] }
+
+function toArray(a){ return Array.prototype.slice.call(a) }
+
+function shuffle(a){
+  for (var i = a.length; i > 0; i--){
+    var r = randint(i)
+    var swap = a[i-1]
+    a[i-1] = a[r]
+    a[r] = swap
+  }
+  return a
+}