Add playalbum.js.

Javascript/playalbum.js

@@ -0,0 +1,20 @@
+javascript:
+
+function give_event(player, index)
+{
+    /*
+    This needs to be a function instead of inlined into the loop because `next`
+    needs to be scoped, otherwise all of the players share the same next
+    variable and it doesn't work.
+    */
+    var next = index + 1;
+    players[index].addEventListener("ended", function(){ console.log(next); players[next].play(); });
+}
+
+players = document.getElementsByTagName("audio");
+/*length - 1 because the final player doesn't need an event, only the second-last.*/
+for (var index = 0; index < players.length - 1; index += 1)
+{
+    give_event(players[index], index);
+}
+players[0].play();