Update app.py

app.py

@@ -223,7 +223,6 @@ def stem_split(audio_path):
 def process_audio(audio_file, selected_effects, isolate_vocals, preset_name, export_format):
     status = "🔊 Loading audio..."
     try:
-        # Load input audio file
         audio = AudioSegment.from_file(audio_file)
         status = "🛠 Applying effects..."
         effect_map_real = {
@@ -241,7 +240,7 @@ def process_audio(audio_file, selected_effects, isolate_vocals, preset_name, exp
             "Vocal Distortion": lambda x: apply_vocal_distortion(x),
             "Stage Mode": apply_stage_mode
         }
-        history = [audio]  # For undo functionality
+        history = [audio]
         for effect_name in selected_effects:
             if effect_name in effect_map_real:
                 audio = effect_map_real[effect_name](audio)
@@ -301,7 +300,7 @@ def generate_session_log(audio_path, effects, isolate_vocals, export_format, gen
         "detected_genre": genre
     }, indent=2)
 
-# Preset Choices (All restored + more added)
+# Preset Choices
 preset_choices = {
     "Default": [],
     "Clean Podcast": ["Noise Reduction", "Normalize"],
@@ -320,7 +319,6 @@ preset_choices = {
     "🎤 R&B Vocal": ["Noise Reduction", "Bass Boost (100-300Hz)", "Treble Boost (2000-4000Hz)"],
     "💃 Soul Vocal": ["Noise Reduction", "Bass Boost (80-200Hz)", "Treble Boost (1500-3500Hz)"],
     "🕺 Funk Groove": ["Bass Boost (80-200Hz)", "Treble Boost (1000-3000Hz)"],
-    # New presets
     "Studio Master": ["Noise Reduction", "Normalize", "Bass Boost", "Treble Boost", "Limiter"],
     "Podcast Voice": ["Noise Reduction", "Auto Gain", "High Pass Filter (85Hz)"],
     "Lo-Fi Chill": ["Noise Gate", "Low-Pass Filter (3000Hz)", "Mono Downmix", "Bitcrusher"],
@@ -575,7 +573,7 @@ with gr.Blocks(css="""
         ], outputs=[
             output_audio, waveform_img, session_log_out, genre_out, status_box
         ])
-    # --- Remix Mode – Stem Splitting + Per-Stem Effects ===
+    # --- Remix Mode – Stem Splitting + Per-Stem Effects ---
     with gr.Tab("🎛 Remix Mode"):
         with gr.Row():
             with gr.Column(min_width=200):
@@ -589,7 +587,7 @@ with gr.Blocks(css="""
                     gr.File(label="Other")
                 ]
         split_button.click(fn=stem_split, inputs=[input_audio_remix], outputs=stem_outputs)
-    # --- AI Remastering Tab – Now Fixed & Working ===
+    # --- AI Remastering Tab ---
     with gr.Tab("🔮 AI Remastering"):
         gr.Interface(
             fn=ai_remaster,
@@ -599,7 +597,7 @@ with gr.Blocks(css="""
             description="Uses noise reduction, vocal isolation, and mastering to enhance old recordings.",
             allow_flagging="never"
         )
-    # --- Harmonic Saturation / Exciter – Now Included ===
+    # --- Harmonic Saturation / Exciter ---
     with gr.Tab("🧬 Harmonic Saturation"):
         gr.Interface(
             fn=harmonic_saturation,
@@ -613,7 +611,7 @@ with gr.Blocks(css="""
             description="Enhance clarity and presence using saturation styles like Tube or Tape.",
             allow_flagging="never"
         )
-    # --- Vocal Doubler / Harmonizer – Added Back ===
+    # --- Vocal Doubler / Harmonizer ---
     with gr.Tab("🎧 Vocal Doubler / Harmonizer"):
         gr.Interface(
             fn=lambda x: apply_harmony(x),
@@ -622,7 +620,7 @@ with gr.Blocks(css="""
             title="Add Vocal Doubling / Harmony",
             description="Enhance vocals with doubling or harmony"
         )
-    # --- Batch Processing – Full Support ===
+    # --- Batch Processing ---
     with gr.Tab("🔊 Batch Processing"):
         gr.Interface(
             fn=batch_process_audio,
@@ -642,7 +640,7 @@ with gr.Blocks(css="""
             flagging_mode="never",
             submit_btn="Process All Files"
         )
-    # --- Vocal Pitch Correction – Auto-Tune Style ===
+    # --- Vocal Pitch Correction – Auto-Tune Style ---
     with gr.Tab("🎤 AI Auto-Tune"):
         gr.Interface(
             fn=auto_tune_vocal,
@@ -654,14 +652,14 @@ with gr.Blocks(css="""
             title="AI Auto-Tune",
             description="Correct vocal pitch automatically using AI"
         )
-    # --- Frequency Spectrum Tab – Real-time Visualizer ===
+    # --- Frequency Spectrum Tab – Real-time Visualizer ---
     with gr.Tab("📊 Frequency Spectrum"):
         gr.Interface(
             fn=visualize_spectrum,
             inputs=gr.Audio(label="Upload Track", type="filepath"),
             outputs=gr.Image(label="Spectrum Analysis")
         )
-    # --- Loudness Graph Tab – EBU R128 Matching ===
+    # --- Loudness Graph Tab – EBU R128 Matching ---
     with gr.Tab("📈 Loudness Graph"):
         gr.Interface(
             fn=match_loudness,
@@ -673,7 +671,7 @@ with gr.Blocks(css="""
             title="Match Loudness Across Tracks",
             description="Ensure consistent volume using EBU R128 standard"
         )
-    # --- Save/Load Mix Session (.aiproj) – Added Back ===
+    # --- Save/Load Mix Session (.aiproj) ---
     with gr.Tab("📁 Save/Load Project"):
         with gr.Row():
             with gr.Column(min_width=300):
@@ -685,6 +683,7 @@ with gr.Blocks(css="""
                         gr.CheckboxGroup(choices=preset_choices["Default"], label="Applied Effects")
                     ],
                     outputs=gr.File(label="Project File (.aiproj)")
+                )
             with gr.Column(min_width=300):
                 gr.Interface(
                     fn=load_project,
@@ -696,7 +695,7 @@ with gr.Blocks(css="""
                     title="Resume Last Project",
                     description="Load your saved session"
                 )
-    # --- Prompt-Based Editing Tab – Added Back ===
+    # --- Prompt-Based Editing Tab ---
     with gr.Tab("🧠 Prompt-Based Editing"):
         gr.Interface(
             fn=process_prompt,
@@ -709,7 +708,7 @@ with gr.Blocks(css="""
             description="Say what you want done and let AI handle it.",
             allow_flagging="never"
         )
-    # --- Custom EQ Editor ===
+    # --- Custom EQ Editor ---
     with gr.Tab("🎛 Custom EQ Editor"):
         gr.Interface(
             fn=auto_eq,
@@ -721,7 +720,7 @@ with gr.Blocks(css="""
             title="Custom EQ by Genre",
             description="Apply custom EQ based on genre"
         )
-    # --- A/B Compare Two Tracks ===
+    # --- A/B Compare Two Tracks ---
     with gr.Tab("🎯 A/B Compare"):
         gr.Interface(
             fn=compare_ab,
@@ -737,7 +736,7 @@ with gr.Blocks(css="""
             description="Hear two mixes side-by-side",
             allow_flagging="never"
         )
-    # --- Loop Playback ===
+    # --- Loop Playback ---
     with gr.Tab("🔁 Loop Playback"):
         gr.Interface(
             fn=loop_section,
@@ -751,7 +750,7 @@ with gr.Blocks(css="""
             title="Repeat a Section",
             description="Useful for editing a specific part"
         )
-    # --- Share Effect Chain Tab – Now Defined! ===
+    # --- Share Effect Chain Tab ---
     with gr.Tab("🔗 Share Effect Chain"):
         gr.Interface(
             fn=lambda x: json.dumps(x),
@@ -768,7 +767,7 @@ with gr.Blocks(css="""
             title="Restore From Shared Chain",
             description="Paste shared effect chain JSON to restore settings"
         )
-    # --- Keyboard Shortcuts Tab ===
+    # --- Keyboard Shortcuts Tab ---
     with gr.Tab("⌨ Keyboard Shortcuts"):
         gr.Markdown("""
         ### Keyboard Controls
@@ -780,7 +779,7 @@ with gr.Blocks(css="""
         - `Ctrl + C`: Copy effect chain
         - `Ctrl + V`: Paste effect chain
         """)
-    # --- Vocal Formant Correction – Now Defined! ===
+    # --- Vocal Formant Correction ---
     with gr.Tab("🧑‍🎤 Vocal Formant Correction"):
         gr.Interface(
             fn=formant_correct,
@@ -792,7 +791,7 @@ with gr.Blocks(css="""
             title="Preserve Vocal Quality During Pitch Shift",
             description="Make pitch-shifted vocals sound more human"
         )
-    # --- Voice Swap / Cloning – New Tab ===
+    # --- Voice Swap / Cloning ---
     with gr.Tab("🔁 Voice Swap / Cloning"):
         gr.Interface(
             fn=clone_voice,
@@ -804,7 +803,7 @@ with gr.Blocks(css="""
             title="Swap Voices Using AI",
             description="Clone or convert voice from one to another"
         )
-    # --- DAW Template Export – Now Included ===
+    # --- DAW Template Export ---
     with gr.Tab("🎛 DAW Template Export"):
         gr.Interface(
             fn=generate_ableton_template,
@@ -813,7 +812,7 @@ with gr.Blocks(css="""
             title="Generate Ableton/Live/FLP Template",
             description="Export ready-to-use templates for DAWs"
         )
-    # --- Export Full Mix ZIP – Added Back ===
+    # --- Export Full Mix ZIP ---
     with gr.Tab("📁 Export Full Mix ZIP"):
         gr.Interface(
             fn=export_full_mix,