diff --git a/justwindow b/justwindow
new file mode 100755
index 0000000..18ec258
Binary files /dev/null and b/justwindow differ
diff --git a/justwindow.c b/justwindow.c
new file mode 100644
index 0000000..090a826
--- /dev/null
+++ b/justwindow.c
@@ -0,0 +1,17 @@
+#include <proto/intuition.h>
+#include <proto/dos.h>
+
+int main(void) {
+  struct Window *window;
+
+  window = OpenWindowTags(NULL,
+    WA_Title, "Wow",
+    TAG_END
+  );
+
+  Delay(200);
+
+  CloseWindow(window);
+
+  return 0;
+}
diff --git a/justwindow.lnk b/justwindow.lnk
new file mode 100644
index 0000000..1f7bbea
--- /dev/null
+++ b/justwindow.lnk
@@ -0,0 +1,4 @@
+FROM LIB:c.o "justwindow.o"
+TO "justwindow"
+LIB LIB:sc.lib LIB:amiga.lib
+
diff --git a/main b/main
index 5abd520..6954eb3 100755
Binary files a/main and b/main differ
diff --git a/main.c b/main.c
index 11c15cd..ec693e8 100644
--- a/main.c
+++ b/main.c
@@ -17,8 +17,9 @@
 #include <proto/diskfont.h>
 
 // handle images and sound
-#include <proto/datatypes.h>
+#include <clib/datatypes_protos.h>
 #include <datatypes/datatypesclass.h>
+#include <datatypes/soundclass.h>
 
 // timer stuff. using proto/timer.h did not work well, likely
 // because of how you have to open the device.
@@ -107,6 +108,7 @@ struct MsgPort *timerPort;
 #define BELL_FILENAME "bell.8svx"
 
 APTR bellSound = NULL;
+struct Library *DataTypesBase;
 
 // our business logic
 // for how long should I cook this pizza?
@@ -177,6 +179,11 @@ int setup(void) {
   // to get the current time.
   TimerBase = TimerIO->tr_node.io_Device;
 
+  if (NULL == (DataTypesBase = OpenLibrary("datatypes.library", 40))) {
+    // this is ok, we just won't play sound
+    printf("no sound!");
+  }
+
   return 1;
 }
 
@@ -185,6 +192,9 @@ int setup(void) {
  */
 void teardown(void) {
   // http://amigadev.elowar.com/read/ADCD_2.1/Devices_Manual_guide/node0196.html
+  if (DataTypesBase) {
+    CloseLibrary(DataTypesBase);
+  }
   if (TimerIO) {
     CloseDevice((struct IORequest *)TimerIO);
     DeleteExtIO((struct IORequest *)TimerIO);
@@ -508,7 +518,7 @@ int openAboutWindow(void) {
     WA_DepthGadget, TRUE,
     WA_CloseGadget, TRUE,
     WA_Activate, TRUE,
-    WA_Title, "Acout Pizza Timer",
+    WA_Title, "About Pizza Timer",
     TAG_END
   );
 
@@ -698,17 +708,29 @@ void handleIntuitionMessage(struct IntuiMessage *iMessage) {
   }
 }
 
+BYTE waitForSoundSignalNumber;
 
 /**
- * Start playing a bell sound, and start a timer to tear down
- * the bell data once it's done.
+ * Start playing a bell sound, then wait for it to finish.
  */
 void startBellSound(void) {
   struct dtTrigger myTrigger;
   struct MsgPort *TimerPort;
   ULONG soundPlayResult;
 
-  if (bellSound = NewDTObject(BELL_FILENAME, DTA_GroupID, GID_SOUND, TAG_END)) {
+  // https://amigaworld.net/modules/newbb/viewtopic.php?forum=15&topic_id=39094&post_id=735120&viewmode=thread&order=0#735120
+ waitForSoundSignalNumber = AllocSignal(-1);
+
+  if (bellSound = NewDTObject(
+        BELL_FILENAME,
+        DTA_GroupID, GID_SOUND,
+        // ourselves
+        SDTA_SignalTask, (ULONG)FindTask(NULL),
+        // ideally we should use this, but my headers aren't new enough?
+        // SDTA_SignalBitNumber, waitForSoundSignalNumber,
+        // so we'll do it this way
+        SDTA_SignalBit, 1 << waitForSoundSignalNumber,
+        TAG_END)) {
     myTrigger.MethodID = DTM_TRIGGER;
     myTrigger.dtt_GInfo = NULL;
     myTrigger.dtt_Function = STM_PLAY;
@@ -717,6 +739,7 @@ void startBellSound(void) {
     // https://github.com/khval/AmosKittens/blob/79f00ba3b81805b54fd4e437f667ea2eecab740d/OS/AmigaOS/animation.cpp#L128
     soundPlayResult = DoDTMethodA(bellSound, NULL, NULL, (Msg) &myTrigger);
 
+    /**
     TimerPort = TimerIO->tr_node.io_Message.mn_ReplyPort;
 
     // eventually wait for the sound to stop playing
@@ -724,6 +747,7 @@ void startBellSound(void) {
     TimerIO->tr_time.tv_secs = 2;
     TimerIO->tr_time.tv_micro = 0;
     SendIO((struct IORequest *)TimerIO);
+    */
   }
 }
 
@@ -735,6 +759,7 @@ void waitForBellToFinish(void) {
   ULONG timerSignal;
 
   if (bellSound) {
+    /**
     TimerPort = TimerIO->tr_node.io_Message.mn_ReplyPort;
 
     // TODO: move this into the main event loop, so that
@@ -743,7 +768,8 @@ void waitForBellToFinish(void) {
     // or do we need two timer.devices with two separate IOs?
     // https://amigadev.elowar.com/read/ADCD_2.1/Devices_Manual_guide/node00C4.html
     timerSignal = 1L << TimerPort->mp_SigBit;
-    Wait(timerSignal);
+    */
+    Wait(1 << waitForSoundSignalNumber);
 
     DisposeDTObject(bellSound);
   }