oops, forgot a new file

syng/sources/common.py

@@ -0,0 +1,15 @@
+from __future__ import annotations
+import asyncio
+
+
+async def play_mpv(
+    video: str, audio: str | None, options
+) -> asyncio.subprocess.Process:
+    args = [*options, video] + ([f"--audio-file={audio}"] if audio else [])
+
+    mpv_process = asyncio.create_subprocess_exec("mpv", *args)
+    return await mpv_process
+
+
+def kill_mpv(mpv: asyncio.subprocess.Process):
+    mpv.terminate()