diff --git a/assets/A_LA.ogg b/assets/A_LA.ogg
new file mode 100644
index 0000000..957c76b
Binary files /dev/null and b/assets/A_LA.ogg differ
diff --git a/assets/B_SI.ogg b/assets/B_SI.ogg
new file mode 100644
index 0000000..7d99af2
Binary files /dev/null and b/assets/B_SI.ogg differ
diff --git a/assets/C_DO.ogg b/assets/C_DO.ogg
new file mode 100644
index 0000000..a713e6b
Binary files /dev/null and b/assets/C_DO.ogg differ
diff --git a/assets/D_RE.ogg b/assets/D_RE.ogg
new file mode 100644
index 0000000..bd36d9a
Binary files /dev/null and b/assets/D_RE.ogg differ
diff --git a/assets/E_MI.ogg b/assets/E_MI.ogg
new file mode 100644
index 0000000..aad55e2
Binary files /dev/null and b/assets/E_MI.ogg differ
diff --git a/assets/F_FA.ogg b/assets/F_FA.ogg
new file mode 100644
index 0000000..7e4c5c6
Binary files /dev/null and b/assets/F_FA.ogg differ
diff --git a/assets/G_SOL.ogg b/assets/G_SOL.ogg
new file mode 100644
index 0000000..d25ddff
Binary files /dev/null and b/assets/G_SOL.ogg differ
diff --git a/assets/ah.ogg b/assets/Z_ah.ogg
similarity index 100%
rename from assets/ah.ogg
rename to assets/Z_ah.ogg
diff --git a/src/main.rs b/src/main.rs
index f33fac5..1b441ac 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -172,7 +172,8 @@ impl MyApp {
             }
             Message::ChangeSound(i, s) => {
                 self.poly_frame.polygons[i].sound =
-                    StaticSoundData::from_file(&s).expect("Fail to load audio");
+                    StaticSoundData::from_file(format!("./assets/{}", s))
+                        .expect("Fail to load audio");
                 self.poly_frame.polygons[i].sound_name = s;
             }
         }
@@ -190,11 +191,12 @@ impl MyApp {
             .map(|polygon| {
                 let current_index = i;
                 i += 1;
-                let entries = fs::read_dir("./assets/")
+                let mut entries: Vec<String> = fs::read_dir("./assets")
                     .unwrap()
-                    .map(|res| res.map(|e| e.path().to_str().unwrap().to_string()))
-                    .collect::<Result<Vec<_>, io::Error>>()
-                    .unwrap();
+                    .filter_map(|res| res.ok())
+                    .map(|e| e.path().file_name().unwrap().to_str().unwrap().to_string())
+                    .collect();
+                entries.sort();
 
                 row![
                     text(&polygon.name),