Don't use typing.Self (yet).

typing.Self has only been introduced in Python 3.10.

platypush/plugins/sound/_converters/_base.py

@@ -4,7 +4,7 @@ from asyncio.subprocess import PIPE
 from logging import getLogger
 from queue import Empty, Queue
 from threading import Event, RLock, Thread
-from typing import Any, Callable, Coroutine, Iterable, Optional, Self
+from typing import Any, Callable, Coroutine, Iterable, Optional
 
 from platypush.context import get_or_create_event_loop
 
@@ -87,7 +87,7 @@ class AudioConverter(Thread, ABC):
         self._on_exit = on_exit
         self._ffmpeg_terminated = Event()
 
-    def __enter__(self) -> Self:
+    def __enter__(self) -> "AudioConverter":
         """
         Audio converter context manager.
 

platypush/plugins/sound/_streams/_player/_base.py

@@ -1,5 +1,5 @@
 from abc import ABC
-from typing import IO, Iterable, List, Optional, Self, Type, Union
+from typing import IO, Iterable, List, Optional, Type, Union
 from typing_extensions import override
 
 import numpy as np
@@ -39,7 +39,7 @@ class AudioPlayer(AudioThread, ABC):
         infile: Optional[str] = None,
         sound: Optional[Union[dict, Iterable[dict]]] = None,
         **kwargs,
-    ) -> Self:
+    ) -> "AudioPlayer":
         from ._resource import AudioResourcePlayer
         from ._synth import AudioSynthPlayer, Sound