diff --git a/.gitignore b/.gitignore
index c192906..64349e7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -180,3 +180,5 @@ cython_debug/
 .cursorignore
 .cursorindexingignore
 
+# ed1337x
+config.ini
diff --git a/src/app.py b/src/app.py
index 0df3962..9f8c560 100644
--- a/src/app.py
+++ b/src/app.py
@@ -4,26 +4,38 @@ from pathlib import Path
 from mutagen.id3 import ID3
 from datetime import datetime
 from collections import defaultdict
+import configparser
+import sys
 
-CD_SIZE = 695 * 1024 * 1024  # 695 MB
 GROUP_SIZE = 5
 
-# Store the current date
-run_date = datetime.now().strftime("%Y-%m-%d_%H%M%S")
+def load_config():
+    config_path = Path("config.ini")
+    default_config_path = Path("def_config.ini")
 
-# Ask for source path, strip quotes if pasted
-source_input = input("Drag and drop your music folder here, then press Enter: ").strip().strip('"')
-source_media_path = Path(source_input)
+    # If config.ini missing, copy def_config.ini
+    if not config_path.exists():
+        if default_config_path.exists():
+            shutil.copy(default_config_path, config_path)
+            print("config.ini created from def_config.ini with default settings.")
+        else:
+            print("Error: def_config.ini not found! Please create it and rerun.")
+            sys.exit(1)
 
-if not source_media_path.exists() or not source_media_path.is_dir():
-    print(f"Error: {source_media_path} is not a valid directory.")
-    exit(1)
+    # Read default config
+    default_config = configparser.ConfigParser()
+    default_config.read(default_config_path)
 
-# Build destination path
-parent = source_media_path.parent
-folder_name = source_media_path.name
-dest_media_path = parent / f"[CDs-{run_date}]{folder_name}"
-dest_media_path.mkdir(parents=True, exist_ok=True)
+    # Read user config (overrides default)
+    user_config = configparser.ConfigParser()
+    user_config.read(config_path)
+
+    # Merge configs: start with defaults, update with user settings
+    merged_config = configparser.ConfigParser()
+    merged_config.read_dict(default_config)
+    merged_config.read_dict(user_config)
+
+    return merged_config
 
 def get_bpm(file_path):
     try:
@@ -35,64 +47,90 @@ def get_bpm(file_path):
         print(f"Skipping {file_path.name} (no BPM): {e}")
     return None
 
-# Collect all tracks recursively, grouping unknown BPM separately
-all_tracks = []
-for file in source_media_path.rglob("*.mp3"):  # <-- recursive glob
-    bpm = get_bpm(file)
-    size = file.stat().st_size
-    if bpm is None:
-        bpm_range = "[Unknown BPM]"
-    else:
-        bpm_range = f"{(bpm // GROUP_SIZE) * GROUP_SIZE}-to-{((bpm // GROUP_SIZE) * GROUP_SIZE) + GROUP_SIZE - 1}"
-    all_tracks.append({"file": file, "size": size, "bpm_range": bpm_range})
-
-if not all_tracks:
-    print("No MP3 files found.")
-    exit(0)
-
-# Calculate total size and number of CDs needed
-total_size = sum(t["size"] for t in all_tracks)
-num_cds = max(1, (total_size + CD_SIZE - 1) // CD_SIZE)
-
-print(f"Total size: {total_size / 1024**2:.2f} MB, splitting into {num_cds} CDs")
-
-# Group tracks by BPM range
-bpm_groups = defaultdict(list)
-for track in all_tracks:
-    bpm_groups[track["bpm_range"]].append(track)
-
-# Sort each bpm group
-for bpm_range in bpm_groups:
-    bpm_groups[bpm_range].sort(key=lambda x: x["file"].name)
-
-# Split each BPM group evenly into num_cds parts
 def split_evenly(lst, n):
     k, m = divmod(len(lst), n)
     return [lst[i*k + min(i, m):(i+1)*k + min(i+1, m)] for i in range(n)]
 
-bpm_chunks = {}
-for bpm_range, tracks in bpm_groups.items():
-    bpm_chunks[bpm_range] = split_evenly(tracks, num_cds)
+def main():
+    config = load_config()
 
-# Prepare CDs
-cd_contents = [[] for _ in range(num_cds)]
+    # Use SplitFolderMB from config, convert MB to bytes
+    CD_SIZE = config.getint("Settings", "SplitFolderMB") * 1024 * 1024
 
-# Fill CDs with balanced BPM chunks
-for bpm_range in bpm_chunks:
-    for i, chunk in enumerate(bpm_chunks[bpm_range]):
-        cd_contents[i].extend(chunk)
+    # Store the current date for folder naming
+    run_date = datetime.now().strftime("%Y-%m-%d_%H%M%S")
 
-# Write CDs with BPM subfolders
-for i, tracks in enumerate(cd_contents, start=1):
-    cd_folder = dest_media_path / f"CD-{i:02}"
-    cd_folder.mkdir(parents=True, exist_ok=True)
-    size_accum = 0
-    for track in tracks:
-        bpm_subfolder = cd_folder / track["bpm_range"]
-        bpm_subfolder.mkdir(parents=True, exist_ok=True)
-        shutil.copy(track["file"], bpm_subfolder / track["file"].name)
-        size_accum += track["size"]
-    print(f"[WRITE] CD-{i:02}: {len(tracks)} tracks, approx {size_accum/1024**2:.2f} MB")
+    # Ask for source path, strip quotes if pasted
+    source_input = input("Drag and drop your music folder here, then press Enter: ").strip().strip('"')
+    source_media_path = Path(source_input)
 
-print("\n✅ Done!")
+    if not source_media_path.exists() or not source_media_path.is_dir():
+        print(f"Error: {source_media_path} is not a valid directory.")
+        sys.exit(1)
+
+    # Build destination path
+    parent = source_media_path.parent
+    folder_name = source_media_path.name
+    dest_media_path = parent / f"[CDs-{run_date}]{folder_name}"
+    dest_media_path.mkdir(parents=True, exist_ok=True)
+
+    # Collect all tracks recursively, group unknown BPM separately
+    all_tracks = []
+    for file in source_media_path.rglob("*.mp3"):
+        bpm = get_bpm(file)
+        size = file.stat().st_size
+        if bpm is None:
+            bpm_range = "[Unknown BPM]"
+        else:
+            bpm_range = f"{(bpm // GROUP_SIZE) * GROUP_SIZE}-to-{((bpm // GROUP_SIZE) * GROUP_SIZE) + GROUP_SIZE - 1}"
+        all_tracks.append({"file": file, "size": size, "bpm_range": bpm_range})
+
+    if not all_tracks:
+        print("No MP3 files found.")
+        sys.exit(0)
+
+    # Calculate total size and number of CDs needed
+    total_size = sum(t["size"] for t in all_tracks)
+    num_cds = max(1, (total_size + CD_SIZE - 1) // CD_SIZE)
+
+    print(f"Total size: {total_size / 1024**2:.2f} MB, splitting into {num_cds} CDs")
+
+    # Group tracks by BPM range
+    bpm_groups = defaultdict(list)
+    for track in all_tracks:
+        bpm_groups[track["bpm_range"]].append(track)
+
+    # Sort each bpm group
+    for bpm_range in bpm_groups:
+        bpm_groups[bpm_range].sort(key=lambda x: x["file"].name)
+
+    # Split each BPM group evenly into num_cds parts
+    bpm_chunks = {}
+    for bpm_range, tracks in bpm_groups.items():
+        bpm_chunks[bpm_range] = split_evenly(tracks, num_cds)
+
+    # Prepare CDs
+    cd_contents = [[] for _ in range(num_cds)]
+
+    # Fill CDs with balanced BPM chunks
+    for bpm_range in bpm_chunks:
+        for i, chunk in enumerate(bpm_chunks[bpm_range]):
+            cd_contents[i].extend(chunk)
+
+    # Write CDs with BPM subfolders
+    for i, tracks in enumerate(cd_contents, start=1):
+        cd_folder = dest_media_path / f"CD-{i:02}"
+        cd_folder.mkdir(parents=True, exist_ok=True)
+        size_accum = 0
+        for track in tracks:
+            bpm_subfolder = cd_folder / track["bpm_range"]
+            bpm_subfolder.mkdir(parents=True, exist_ok=True)
+            shutil.copy(track["file"], bpm_subfolder / track["file"].name)
+            size_accum += track["size"]
+        print(f"[WRITE] CD-{i:02}: {len(tracks)} tracks, approx {size_accum/1024**2:.2f} MB")
+
+    print("\n✅ Done!")
+
+if __name__ == "__main__":
+    main()
 
diff --git a/src/def_config.ini b/src/def_config.ini
new file mode 100644
index 0000000..9e41dfc
--- /dev/null
+++ b/src/def_config.ini
@@ -0,0 +1,4 @@
+[Settings]
+bCheckNonPresentBPM = False
+bReCheckPresentBPM = False
+SplitFolderMB = 695