diff --git a/README.md b/README.md
index 83e1cc3..63d0291 100644
--- a/README.md
+++ b/README.md
@@ -1,27 +1,41 @@
 # flac2pod
+
 Converts your existing FLAC library to be played on an iPod Classic.
 
 This script makes use of ffmpeg to convert your existing FLAC music library to AAC-256 for easy iPod Classic use. It can also bake your existing ReplayGain data into the output files. SoundCheck support was removed due to this feature being very finicky on iPods. If you would like to add SoundCheck data to your output files, omit the --bake option and then use https://github.com/rwinkhart/rg2sc on your output files.
 
 In order for ReplayGain baking to work, your FLAC library must already be tagged with ReplayGain data. If you haven't already done this, flac2pod comes with a script (flac2pod-flacgain) for quickly applying these ReplayGain tags.
 
+# WARNING
+
+This is an older project of mine that is only updated to fix bugs and maintain compatibility. It is written rather poorly, but it does what it says on the tin, so I will not be investing time into rewriting it.
+
 # Usage
+
 Simply run...
+
 ```
 flac2pod <source_dir> <destination_dir>
 ```
+
 ...to convert your library, or run...
+
 ```
 flac2pod --help
 ```
+
 ...to see additional options, or run...
+
 ```
 flac2pod-flacgain <source_dir>
 ```
+
 ...to tag your FLAC library with ReplayGain data, or run...
+
 ```
 flac2pod-artconvert <source_dir>
 ```
+
 ...to convert embedded PNGs (in MP4/M4A files) to iPod-ready JPEGs.
 
 In order for flac2pod to function, your source_dir must be structured as follows:
diff --git a/lib/flac2pod.py b/lib/flac2pod.py
index a9f5735..3902390 100755
--- a/lib/flac2pod.py
+++ b/lib/flac2pod.py
@@ -1,7 +1,5 @@
 #!/usr/bin/env python3
 
-# external modules
-
 from argparse import ArgumentParser
 from mutagen.flac import FLAC
 from os import cpu_count, path, walk
@@ -29,12 +27,11 @@ def scan_source(_source):
     for _album in sorted(_album_dirs):
         for _root, _directories, _files in walk(path.expanduser(_album)):
             for _filename in _files:
-                if _filename.endswith('.flac') or _filename.endswith('.mp3') or _filename.endswith('.mp4') \
-                        or _filename.endswith('.m4a'):
+                if _filename.lower().endswith('.flac') or _filename.lower().endswith('.mp3') or \
+                _filename.lower().endswith('.mp4') or _filename.lower().endswith('.m4a'):
                     _full_paths.append(f"{_album}/{_filename}")
     return _album_dirs, _full_paths
 
-
 def create_destination():
     for _dir in source_directories[0]:
         Path(path.expanduser(_dir.replace(path.expanduser(source), path.expanduser(destination))))\
@@ -48,7 +45,7 @@ def scan_destination_convert():
         _progress = round((_i_total / _total_files) * 100, 2)
         if not Path(f"{(_file.replace(path.expanduser(source), path.expanduser(destination)))[:-5]}.m4a").is_file()\
                 and not Path(f"{(_file.replace(path.expanduser(source), path.expanduser(destination)))}").is_file():
-            if not _file.endswith('.flac'):
+            if not _file.lower().endswith('.flac'):
                 print(f"[{_file}] Not a FLAC file, copying...")
                 copy(f"{_file}", f"{_file.replace(path.expanduser(source), path.expanduser(destination))}")
             else: