Update app.py

app.py

@@ -7,13 +7,23 @@ from pydub import AudioSegment
 
 load_dotenv()
 
-MUSICA_FONDO = "musica.mp3"
-TAG1 = "tag.mp3"
-TAG2 = "tag2.mp3"
+ROOT_DIR = os.path.dirname(os.path.abspath(__file__))
+MUSICA_FONDO = os.path.join(ROOT_DIR, "musica.mp3")
+TAG1 = os.path.join(ROOT_DIR, "tag.mp3")
+TAG2 = os.path.join(ROOT_DIR, "tag2.mp3")
 
 def mezclar_musica_y_tags(audio_path: str, custom_music_path: str = None) -> str:
+    if not os.path.exists(audio_path):
+        raise FileNotFoundError(f"Audio file not found: {audio_path}")
     podcast_audio = AudioSegment.from_file(audio_path)
     music_file = custom_music_path if custom_music_path and os.path.exists(custom_music_path) else MUSICA_FONDO
+    if not os.path.exists(music_file):
+        raise FileNotFoundError(f"Music file not found: {music_file}")
+    if not os.path.exists(TAG1):
+        raise FileNotFoundError(f"Tag file not found: {TAG1}")
+    if not os.path.exists(TAG2):
+        raise FileNotFoundError(f"Tag file not found: {TAG2}")
+    
     musica_fondo = AudioSegment.from_file(music_file).apply_gain(-15)
     tag_outro = AudioSegment.from_file(TAG1).apply_gain(-5)
     tag_trans = AudioSegment.from_file(TAG2).apply_gain(-5)
@@ -24,7 +34,7 @@ def mezclar_musica_y_tags(audio_path: str, custom_music_path: str = None) -> str
     musica_fondo_loop = musica_fondo_loop[:duracion_podcast]
 
     mezcla = musica_fondo_loop.overlay(podcast_audio)
-    mezcla = mezcla + tag_outro  # tag.mp3 como outro
+    mezcla = mezcla + tag_outro
 
     silent_ranges = []
     for i in range(0, len(podcast_audio) - 500, 100):