fix for older python runtime

gapless_player.py

@@ -23,6 +23,16 @@ import requests
 from pathlib import Path
 import mimetypes
 
+@dataclass
+class Song:
+    id: str
+    url: str
+    name: str
+    duration: float
+    album_name: str
+    album_cover_path: str
+    artist_name: str
+
 def song_data_to_Song(data, client_data) -> Song:
     # """
     # Build a Jellyfin audio stream URL using urllib.parse.
@@ -73,17 +83,6 @@ os.makedirs("data", exist_ok=True)
 os.makedirs("data/images", exist_ok=True)
 
 
-@dataclass
-class Song:
-    id: str
-    url: str
-    name: str
-    duration: float
-    album_name: str
-    album_cover_path: str
-    artist_name: str
-
-
 class GaplessPlayer:
     def __init__(self, samplerate: int = 96000, channels: int = 2):
         self.samplerate = samplerate