--- a/src/game.cpp
+++ b/src/game.cpp
@@ -131,7 +131,7 @@
 {
 	"sounds/pickup.wav",
 	"sounds/shoot_cg1_modified.wav",//<- Hero shoot sound
-	"sounds/exit.ogg",//<-dj2016-10-28 New proper exit sound (is "PowerUp13.mp3" by Eric Matyas http://soundimage.org/)
+	"sounds/exit.wav",//<- exit sound generated for the FredyGames web build (the original exit.ogg is by Eric Matyas)
 	"sounds/wooeep.wav",
 	"sounds/explode.wav",
 	"sounds/sfx_weapon_singleshot7.wav"//<- Monster shoot sound
--- a/src/keys.cpp
+++ b/src/keys.cpp
@@ -35,8 +35,8 @@
 	SDLK_UP,
 	SDLK_LEFT,
 	SDLK_RIGHT,
-	SDLK_RCTRL,//Note LCTRL and RCTRL are both 'mapped onto' just RCTRL currently [dj2016-10]
-	SDLK_RALT//Note LALT and RALT are both 'mapped onto' just RALT currently [dj2016-10]
+	SDLK_z,//Web build: Jump (the desktop default, Ctrl, is taken by browser and system shortcuts)
+	SDLK_x//Web build: Shoot (the desktop default is Alt)
 };
 
 // Note here keycode is the SDL one, not the 'DJ' one [dj2016-10]
--- a/src/sdl/djinput.cpp
+++ b/src/sdl/djinput.cpp
@@ -343,6 +343,8 @@
 
 void djiPoll()
 {
+	// Web build: loops that poll without waiting (djiWaitForKeyUp, the editor) must give the browser a turn
+	SDL_Delay(1);
 	djiPollBegin();
 
 	// Update input