ffmpeg implemented

src-tauri/src/lib.rs

@@ -64,6 +64,17 @@ async fn player_set_volume(
 
 #[tauri::command]
 async fn player_play(player: State<'_, PlayerRuntime>, url: String) -> Result<(), String> {
+    // Fail fast if audio output or ffmpeg is not available.
+    // This keeps UX predictable: JS can show an error without flipping to "playing".
+    if let Err(e) = player::preflight_check() {
+        {
+            let mut s = player.shared.state.lock().unwrap();
+            s.status = player::PlayerStatus::Error;
+            s.error = Some(e.clone());
+        }
+        return Err(e);
+    }
+
     {
         let mut s = player.shared.state.lock().unwrap();
         s.error = None;