Update app.py

app.py

@@ -299,7 +299,7 @@ app = Server(title="ace-step-jam")
 @app.api(name="create", time_limit=300)
 def create(
     description: str,
-    audio_duration: float = 60.0,
+    audio_duration: float = 60.0, 120.0, 180.0
     seed: int = -1,
     community: bool = False,
 ) -> str:
@@ -393,7 +393,7 @@ def create(
 def generate(
     prompt: str,
     lyrics: str,
-    audio_duration: float = 60.0,
+    audio_duration: float = 60.0, 120.0, 180.0
     infer_step: int = 8,
     guidance_scale: float = 7.0,
     seed: int = -1,