diff --git a/repbuild/src/main.rs b/repbuild/src/main.rs
index 9963774..80ed61a 100644
--- a/repbuild/src/main.rs
+++ b/repbuild/src/main.rs
@@ -395,6 +395,8 @@ fn run(release: bool, target: Target, do_accel: bool) -> Result<(), Error> {
                 "-parallel", "none",
                 "-monitor", "none",
                 "-machine", accel,
+                "-audiodev", "pa,id=speaker",
+                "-machine", "pcspk-audiodev=speaker",
                 "-cpu", "max",
                 "-device", "isa-debug-exit,iobase=0xf4,iosize=0x04",
             ]);
diff --git a/sysdata/libraries/render/src/lib.hb b/sysdata/libraries/render/src/lib.hb
index 1162478..556387c 100644
--- a/sysdata/libraries/render/src/lib.hb
+++ b/sysdata/libraries/render/src/lib.hb
@@ -32,10 +32,7 @@ light_cyan := Color.(255, 255, 0, 255)
 put_pixel := mode.put_pixel
 put_rect := mode.put_rect
 put_filled_rect := mode.put_filled_rect
-put_trirect := mode.put_trirect
 put_line := mode.put_line
-put_vline := mode.put_vline
-put_hline := mode.put_hline
 clear := mode.clear
 put_image := mode.put_image
 // thanks peony for these three!
diff --git a/sysdata/libraries/render/src/software.hb b/sysdata/libraries/render/src/software.hb
index 6d13efe..aa83562 100644
--- a/sysdata/libraries/render/src/software.hb
+++ b/sysdata/libraries/render/src/software.hb
@@ -58,9 +58,6 @@ height := fn(): int {
 }
 
 screenidx := fn(x: int, y: int): int {
-	/*if x < 0 || y < 0 || x >= ctx.width || y >= ctx.height {
-		return -1
-	}*/
 	return x + ctx.width * y
 }
 
@@ -164,38 +161,6 @@ put_line := fn(p0: Vec2(int), p1: Vec2(int), color: Color): void {
 	return
 }
 
-put_vline := fn(x: int, y0: int, y1: int, color: Color): void {
-	if y1 < y0 {
-		tmp := y0
-		y0 = y1
-		y1 = tmp
-	}
-	y := y0
-
-	loop if y == y1 break else {
-		*(ctx.buf + @inline(screenidx, x, y)) = color
-		y += 1
-	}
-
-	return
-}
-
-put_hline := fn(y: int, x0: int, x1: int, color: Color): void {
-	if x1 < x0 {
-		tmp := x0
-		x0 = x1
-		x1 = tmp
-	}
-	x := x0
-
-	loop if x == x1 break else {
-		*(ctx.buf + @inline(screenidx, x, y)) = color
-		x += 1
-	}
-
-	return
-}
-
 set_height := fn(new: int): void {
 	return
 }
diff --git a/sysdata/libraries/sound/README.md b/sysdata/libraries/sound/README.md
new file mode 100644
index 0000000..0fc1d68
--- /dev/null
+++ b/sysdata/libraries/sound/README.md
@@ -0,0 +1 @@
+Simple sound driver.
\ No newline at end of file
diff --git a/sysdata/libraries/sound/src/lib.hb b/sysdata/libraries/sound/src/lib.hb
new file mode 100644
index 0000000..cf9e9c8
--- /dev/null
+++ b/sysdata/libraries/sound/src/lib.hb
@@ -0,0 +1,23 @@
+.{memory, log, string} := @use("../../stn/src/lib.hb")
+
+start := fn(): void {
+	memory.outb(0x61, memory.inb(0x61) | 3)
+	return
+}
+
+stop := fn(): void {
+	memory.outb(0x61, memory.inb(0x61) & 0xFC)
+	return
+}
+
+set_frequency := fn(frequency: u16): void {
+	dfreq := 0xFFFE & 1193180 / frequency
+	memory.outb(0x43, 0xB6)
+	fmtpage := memory.request_page(1)
+	log.info(string.display_int(@as(u8, @intcast(dfreq) & 0xFF), fmtpage))
+	log.info(string.display_int(@as(u8, @intcast(dfreq >> 8) & 0xFF), fmtpage))
+	memory.outb(0x42, @as(u8, @intcast(dfreq) & 0xFF))
+	memory.outb(0x42, @as(u8, @intcast(dfreq >> 8) & 0xFF))
+	//memory.outb(0x20, 0x20)
+	return
+}
\ No newline at end of file
diff --git a/sysdata/programs/tests/src/main.hb b/sysdata/programs/tests/src/main.hb
index be45842..1dee15a 100644
--- a/sysdata/programs/tests/src/main.hb
+++ b/sysdata/programs/tests/src/main.hb
@@ -1,13 +1,24 @@
 .{log, string, memory, buffer} := @use("../../../libraries/stn/src/lib.hb")
+sound := @use("../../../libraries/sound/src/lib.hb")
 
 service_search := fn(): void {
 	a := "\{01}\0"
 	@eca(3, 0, a, 2)
+	return
+}
 
+beep := fn(): void {
+	sound.set_frequency(1024)
+	sound.start()
 	return
 }
 
 main := fn(): int {
+	//loop {
+	//	memory.outb(0x61, memory.inb(0x61) & 0xFE | 1)
+	//	memory.outb(0x61, memory.inb(0x61) & 0xFE)
+	//}
+	beep()
 	//service_search()
 	return 0
 }
\ No newline at end of file
diff --git a/sysdata/programs/tetris/src/main.hb b/sysdata/programs/tetris/src/main.hb
deleted file mode 100644
index f4eaa3b..0000000
--- a/sysdata/programs/tetris/src/main.hb
+++ /dev/null
@@ -1,28 +0,0 @@
-.{memory, log, string, buffer, math} := @use("../../../libraries/stn/src/lib.hb")
-render := @use("../../../libraries/render/src/lib.hb")
-Color := render.Color
-Vec2 := math.Vec2
-
-main := fn(): void {
-	input := @as(u8, 0)
-	output_buffer := memory.request_page(1)
-	input_buffer := buffer.search("XKeyboard\0")
-
-	render.init()
-
-	loop {
-		render.clear(render.black)
-		render.put_vline(100, 255, 128, Color.(255, 255, 255, 255))
-		render.put_hline(64, 100 - 64, 164, Color.(255, 255, 255, 255))
-		render.put_trirect(Vec2(int).(128, 128 + 256), Vec2(int).(256, -256), Color.(147, 147, 147, 255), Color.(107, 107, 107, 255))
-		render.put_filled_rect(Vec2(int).(128 + 32, 128 + 32), Vec2(int).(256 - 64, 256 - 64), Color.(127, 127, 127, 127))
-		render.sync()
-
-		buffer.recv(input_buffer, &input, 1)
-		if input != 0 {
-			log.info(string.display_int(input, output_buffer))
-			input = 0
-		}
-	}
-	return
-}
diff --git a/sysdata/system_config.toml b/sysdata/system_config.toml
index a3c2ecd..faea9a9 100644
--- a/sysdata/system_config.toml
+++ b/sysdata/system_config.toml
@@ -20,8 +20,8 @@ resolution = "1600x900x24"
 
 [boot.limine.ableos.modules]
 
-# [boot.limine.ableos.modules.tests]
-# path = "boot:///tests.hbf"
+[boot.limine.ableos.modules.tests]
+path = "boot:///tests.hbf"
 
 # [boot.limine.ableos.modules.serial_driver]
 # path = "boot:///serial_driver.hbf"
@@ -29,17 +29,17 @@ resolution = "1600x900x24"
 # [boot.limine.ableos.modules.diskio_driver]
 # path = "boot:///diskio_driver.hbf"
 
-[boot.limine.ableos.modules.render_example]
-path = "boot:///render_example.hbf"
+# [boot.limine.ableos.modules.render_example]
+#path = "boot:///render_example.hbf"
 
 # [boot.limine.ableos.modules.serial_driver_test]
 # path = "boot:///serial_driver_test.hbf"
 
-[boot.limine.ableos.modules.horizon]
-path = "boot:///horizon.hbf"
+# [boot.limine.ableos.modules.horizon]
+# path = "boot:///horizon.hbf"
 
-[boot.limine.ableos.modules.horizon_testing_program]
-path = "boot:///horizon_testing_program.hbf"
+# [boot.limine.ableos.modules.horizon_testing_program]
+# path = "boot:///horizon_testing_program.hbf"
 
 # [boot.limine.ableos.modules.dt_buffer_test]
 # path = "boot:///dt_buffer_test.hbf"