melodyflow fixes

app.py

@@ -145,10 +145,24 @@ def transform_with_melodyflow_api(audio_path, variation, custom_prompt="", solve
     if audio_path is None:
         return None, "❌ No audio file provided"
     
+    # Initialize variables first to avoid scope issues
+    base_steps = 125
+    effective_steps = 25
+    
     try:
         # Initialize client for Facebook MelodyFlow space
         client = Client("facebook/MelodyFlow")
         
+        # Set steps based on solver and the fact we're doing editing
+        # Facebook's space automatically reduces steps for editing:
+        # EULER: divides by 5, MIDPOINT: divides by 2
+        if solver == "midpoint":
+            base_steps = 128
+            effective_steps = 64  # 128 // 2
+        else:  # euler (default)
+            base_steps = 125  
+            effective_steps = 25  # 125 // 5
+        
         # Determine the prompt to use
         if custom_prompt.strip():
             prompt_text = custom_prompt.strip()
@@ -157,16 +171,6 @@ def transform_with_melodyflow_api(audio_path, variation, custom_prompt="", solve
             prompt_text = VARIATION_PROMPTS.get(variation, f"transform this audio to {variation} style")
             status_msg = f"✅ Transformed with {variation} style (flowstep: {flowstep}, {effective_steps} steps)"
         
-        # Set steps based on solver and the fact we're doing editing
-        # Facebook's space automatically reduces steps for editing:
-        # EULER: divides by 5, MIDPOINT: divides by 2
-        if solver == "midpoint":
-            base_steps = 128
-            effective_steps = base_steps // 2  # 64 effective steps
-        else:  # euler
-            base_steps = 125  
-            effective_steps = base_steps // 5  # 25 effective steps
-        
         # Call the MelodyFlow API with the base steps (it will auto-reduce)
         result = client.predict(
             model="facebook/melodyflow-t24-30secs",