diff --git a/main.py b/main.py
index 3b3f772..1847c48 100755
--- a/main.py
+++ b/main.py
@@ -1,52 +1,50 @@
 #!/usr/bin/env python3
 from json import loads as parse_json
-from chunk import Chunk
 from sys import argv
 from pathlib import Path
 from ffmpeg import FFmpeg
+from chunk import Chunk
 import asyncio
 
-# i've taken this from here
-# https://github.com/possan/op1-to-ableton-drumrack/blob/master/convert.py
 def get_aif_json(path):
-    aif = open(path, "rb")
-    # i don't care about the first 12 bytes
-    aif.read(12)
-    for _ in range(10):
-        try:
-            chunk = Chunk(aif)
-            if chunk.getname() == b'APPL':
-                header = chunk.read(4)
-                if header == b'op-1':
-                    json = parse_json(
-                        chunk.read(
-                            chunk.getsize() - 4
-                        ).decode('utf-8').strip('\0').strip()
-                    )
-                    aif.close()
-                    return json
-            chunk.skip()
-        except EOFError:
-            aif.close()
-            return None
+	aif = open(path, "rb")
+	# i don't care about the first 12 bytes
+	aif.read(12)
+	for _ in range(10):
+		try:
+			chunk = Chunk(aif)
+			if chunk.getname() == b'APPL':
+				header = chunk.read(4)
+				if header == b'op-1':
+					json = parse_json(
+						chunk.read(
+								chunk.getsize() - 4
+						).decode('utf-8').strip('\0').strip()
+					)
+					aif.close()
+					return json
+			chunk.skip()
+		except EOFError:
+				aif.close()
+				return None
 
 aif = argv[1]
 target_dir = "."
 if len(argv) > 2:
-    target_dir = argv[2]
-json = get_aif_json(aif)
-samples = []
+	target_dir = argv[2]
+	json = get_aif_json(aif)
+	samples = []
 
 Path(target_dir).mkdir(parents=True, exist_ok=True)
 
 loop = asyncio.get_event_loop()
 for index in range(len(json['start'])):
-    start = json['start'][index] / 4096 / 44100
-    end = json['end'][index] / 4096 / 44100
-    loop.run_until_complete(FFmpeg().option('y').input(aif).output(
-        f"{target_dir}/{index:02d}.wav",
-        ss=(start),
-        to=(end)
-    ).execute())
+	start = json['start'][index] / 4096 / 44100
+	end = json['end'][index] / 4096 / 44100
+	loop.run_until_complete(FFmpeg().option('y').input(aif).output(
+		f"{target_dir}/{index:02d}.wav",
+		ss=(start),
+		to=(end)
+	).execute())
 
 loop.close