diff --git a/auth.py b/src/spotify_to_tidal/auth.py
similarity index 91%
rename from auth.py
rename to src/spotify_to_tidal/auth.py
index bda3eb1..2bc2bba 100644
--- a/auth.py
+++ b/src/spotify_to_tidal/auth.py
@@ -6,7 +6,12 @@ import tidalapi
 import webbrowser
 import yaml
 
-def open_spotify_session(config):
+__all__ = [
+    'open_spotify_session',
+    'open_tidal_session'
+]
+
+def open_spotify_session(config) -> spotipy.Spotify:
     credentials_manager = spotipy.SpotifyOAuth(username=config['username'],
 				       scope='playlist-read-private',
 				       client_id=config['client_id'],
@@ -19,7 +24,7 @@ def open_spotify_session(config):
 
     return spotipy.Spotify(oauth_manager=credentials_manager)
 
-def open_tidal_session(config = None):
+def open_tidal_session(config = None) -> tidalapi.Session:
     try:
         with open('.session.yml', 'r') as session_file:
             previous_session = yaml.safe_load(session_file)
diff --git a/sync.py b/src/spotify_to_tidal/sync.py
similarity index 100%
rename from sync.py
rename to src/spotify_to_tidal/sync.py