Update app.py

app.py

@@ -159,7 +159,7 @@ def roformer_separator(audio, model_key, seg_size, override_seg_size, overlap, p
         print(f"Separation complete!\nResults: {', '.join(separation)}")
 
         stems = [os.path.join(out_dir, file_name) for file_name in separation]
-        return stems[0], stems[1]
+        return stems[1], stems[0]
     except Exception as e:
         raise RuntimeError(f"Roformer separation failed: {e}") from e
 
@@ -194,7 +194,7 @@ def mdx23c_separator(audio, model, seg_size, override_seg_size, overlap, pitch_s
         print(f"Separation complete!\nResults: {', '.join(separation)}")
 
         stems = [os.path.join(out_dir, file_name) for file_name in separation]
-        return stems[0], stems[1]
+        return stems[1], stems[0]
     except Exception as e:
         raise RuntimeError(f"MDX23C separation failed: {e}") from e