Update app.py

app.py

@@ -413,10 +413,21 @@ def synthesize_speech(
         # Save master WAV (lossless) and MP3 preview
         ts = time.strftime("%Y%m%d-%H%M%S")
         master_wav_path = str(OUTPUT_DIR / f"lishani_{ts}_{uuid.uuid4().hex}.wav")
+
+        # Always write WAV (this is very reliable)
         processed_seg.export(master_wav_path, format="wav")
 
-        mp3_path = str(Path(master_wav_path).with_suffix(".mp3"))
-        processed_seg.export(mp3_path, format="mp3", bitrate="320k")
+        # Try MP3, but don't fail the whole call if it breaks
+        mp3_path = None
+        try:
+            mp3_path = str(Path(master_wav_path).with_suffix(".mp3"))
+            processed_seg.export(mp3_path, format="mp3", bitrate="320k")
+        except Exception as e:
+            print("MP3 export failed; returning WAV only:", e)
+            mp3_path = None
+
+        # Return whatever we have: the Audio output will happily preview WAV too
+        return mp3_path or master_wav_path, master_wav_path
 
         return mp3_path, master_wav_path