diff --git a/endpoints/__init__.py b/endpoints/__init__.py
new file mode 100644
index 0000000..d09dd4d
--- /dev/null
+++ b/endpoints/__init__.py
@@ -0,0 +1 @@
+# Radio endpoints package
\ No newline at end of file
diff --git a/lyric_search/sources/lrclib.py b/lyric_search/sources/lrclib.py
index e9a5448..581d432 100644
--- a/lyric_search/sources/lrclib.py
+++ b/lyric_search/sources/lrclib.py
@@ -1,7 +1,5 @@
-import sys
 import time
 
-sys.path.insert(1, "..")
 import traceback
 import logging
 from typing import Optional, Union
@@ -31,7 +29,7 @@ class LRCLib:
 
     @retry(stop=stop_after_attempt(2), wait=wait_fixed(0.5))
     async def search(
-        self, artist: str, song: str, plain: Optional[bool] = True
+        self, artist: str, song: str, plain: Optional[bool] = True, duration: Optional[int] = None
     ) -> Optional[LyricsResult]:
         """
         LRCLib Search
@@ -42,8 +40,8 @@ class LRCLib:
             Optional[LyricsResult]: The result, if found - None otherwise.
         """
         try:
-            artist: str = artist.strip().lower()
-            song: str = song.strip().lower()
+            artist = artist.strip().lower()
+            song = song.strip().lower()
             time_start: float = time.time()
             lrc_obj: Optional[list[dict]] = None
 
@@ -57,6 +55,7 @@ class LRCLib:
                     params={
                         "artist_name": artist,
                         "track_name": song,
+                        **({"duration": duration} if duration else {}),
                     },
                     timeout=self.timeout,
                     headers=self.headers,
@@ -80,6 +79,10 @@ class LRCLib:
                     if not isinstance(search_data, list):
                         raise InvalidLRCLibResponseException("Invalid JSON.")
 
+                    # Filter by duration if provided
+                    if duration:
+                        search_data = [r for r in search_data if abs(r.get("duration", 0) - duration) <= 5]
+
                     if plain:
                         possible_matches = [
                             (
@@ -101,10 +104,13 @@ class LRCLib:
                             if isinstance(result["syncedLyrics"], str)
                         ]
 
+                    best_match = None
                     try:
-                        best_match = self.matcher.find_best_match(
-                            input_track, possible_matches
-                        )[0]
+                        match_result = self.matcher.find_best_match(
+                            input_track, possible_matches  # type: ignore
+                        )
+                        if match_result:
+                            best_match = match_result[0]
                     except:  # noqa
                         pass
 
@@ -145,11 +151,12 @@ class LRCLib:
                         ]
                         lrc_obj = self.datautils.create_lrc_object(returned_lyrics)
                     returned_track: str = f"{returned_artist} - {returned_song}"
-                    (_matched, confidence) = self.matcher.find_best_match(
+                    match_result = self.matcher.find_best_match(
                         input_track=input_track, candidate_tracks=[(0, returned_track)]
                     )
-                    if not confidence:
+                    if not match_result:
                         return  # No suitable match found
+                    _matched, confidence = match_result
                     logging.info("Result found on %s", self.label)
                     time_end: float = time.time()
                     time_diff: float = time_end - time_start
@@ -157,7 +164,7 @@ class LRCLib:
                         artist=returned_artist,
                         song=returned_song,
                         src=self.label,
-                        lyrics=returned_lyrics if plain else lrc_obj,
+                        lyrics=returned_lyrics if plain else lrc_obj,  # type: ignore
                         confidence=confidence,
                         time=time_diff,
                     )
diff --git a/utils/__init__.py b/utils/__init__.py
new file mode 100644
index 0000000..67b9db6
--- /dev/null
+++ b/utils/__init__.py
@@ -0,0 +1 @@
+# Utils package
\ No newline at end of file