diff --git a/ch32v-insert-coin/audio/button_1.raw b/ch32v-insert-coin/audio/button_1.raw
new file mode 100644
index 0000000..ade05bd
Binary files /dev/null and b/ch32v-insert-coin/audio/button_1.raw differ
diff --git a/ch32v-insert-coin/audio/button_2.raw b/ch32v-insert-coin/audio/button_2.raw
new file mode 100644
index 0000000..16b9b36
Binary files /dev/null and b/ch32v-insert-coin/audio/button_2.raw differ
diff --git a/ch32v-insert-coin/audio/button_3.raw b/ch32v-insert-coin/audio/button_3.raw
new file mode 100644
index 0000000..eb62b2d
Binary files /dev/null and b/ch32v-insert-coin/audio/button_3.raw differ
diff --git a/ch32v-insert-coin/src/main.rs b/ch32v-insert-coin/src/main.rs
index 71b3cc4..54ce5dd 100644
--- a/ch32v-insert-coin/src/main.rs
+++ b/ch32v-insert-coin/src/main.rs
@@ -375,9 +375,12 @@ fn app_main(mut p: hal::Peripherals, mut delay: Delay) -> ! {
 
     // dac data
     // let coin_sound = include_bytes!("../audio/coin.raw");
-    let coin_sound = include_bytes!("../audio/sweep_dpcm_u4.raw");
-    let button_sounds = [include_bytes!("../audio/sweep_dpcm_u4.raw")];
-    // let button_sound = include_bytes!("../audio/coinMixTest1_dpcm_u4.raw");
+    // let coin_sound = include_bytes!("../audio/sweep_dpcm_u4.raw");
+
+    let coin_sound = include_bytes!("../audio/button_1.raw");
+    let button_sound_1 = include_bytes!("../audio/button_1.raw");
+    let button_sound_2 = include_bytes!("../audio/button_2.raw");
+    let button_sound_3 = include_bytes!("../audio/button_3.raw");
 
     let mut system_state = SystemState::Active;
 
@@ -483,12 +486,19 @@ fn app_main(mut p: hal::Peripherals, mut delay: Delay) -> ! {
                 println!("debounced button_input value: {}", value);
 
                 if !value {
-                    interfaces
-                        .dac
-                        .load_data(button_sounds[settings.button_sound_index]);
+                    interfaces.dac.load_data(match settings.button_sound_index {
+                        0 => button_sound_1,
+                        1 => button_sound_2,
+                        2 => button_sound_3,
+                        _ => button_sound_1,
+                    });
+                    // interfaces
+                    //     .dac
+                    //     .load_data(button_sounds[settings.button_sound_index]);
 
                     settings.button_sound_index += 1;
-                    if settings.button_sound_index > button_sounds.len() - 1 {
+                    if settings.button_sound_index > 2 {
+                        // if settings.button_sound_index > button_sounds.len() - 1 {
                         settings.button_sound_index = 0;
                     }
                     #[cfg(feature = "enable_print")]