fix: reemplazar audio_loop deprecado por concatenate

app.py

@@ -368,11 +368,15 @@ def montar_video(guion, archivos, subs=None, efecto="ninguno", material_escenas=
     if _os.path.exists("musica.mp3"):
         try:
             from moviepy.editor import CompositeAudioClip, AudioFileClip as _AC
-            musica = _AC("musica.mp3").volumex(0.18)  # musica bajita para no tapar la voz
-            if musica.duration > voz.duration:
-                musica = musica.subclip(0, voz.duration)
-            else:
-                musica = musica.audio_loop(duration=voz.duration)
+            musica = _AC("musica.mp3").volumex(0.18)
+            dur = voz.duration
+            if musica.duration > dur:
+                musica = musica.subclip(0, dur)
+            elif musica.duration < dur:
+                import math
+                reps = math.ceil(dur / musica.duration)
+                from moviepy.editor import concatenate_audioclips
+                musica = concatenate_audioclips([musica] * reps).subclip(0, dur)
             audio_final = CompositeAudioClip([voz.volumex(1.0), musica])
         except Exception as _em:
             log(f"Error mezcla musica: {_em}")