Unrevert audio (#21330)

Co-authored-by: Pieter-Jan Briers <pieterjan.briers@gmail.com>

Content.Server/Audio/ContentAudioSystem.cs

@@ -1,8 +1,41 @@
+using Content.Server.GameTicking.Events;
 using Content.Shared.Audio;
+using Robust.Server.Audio;
+using Robust.Shared.Audio;
+using Robust.Shared.Prototypes;
 
 namespace Content.Server.Audio;
 
 public sealed class ContentAudioSystem : SharedContentAudioSystem
 {
+    [Dependency] private readonly AudioSystem _serverAudio = default!;
+    [Dependency] private readonly IPrototypeManager _protoManager = default!;
 
+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<RoundStartingEvent>(OnRoundStart);
+        _protoManager.PrototypesReloaded += OnProtoReload;
+    }
+
+    private void OnProtoReload(PrototypesReloadedEventArgs obj)
+    {
+        if (!obj.ByType.ContainsKey(typeof(AudioPresetPrototype)))
+            return;
+
+        _serverAudio.ReloadPresets();
+    }
+
+    public override void Shutdown()
+    {
+        base.Shutdown();
+        _protoManager.PrototypesReloaded -= OnProtoReload;
+    }
+
+    private void OnRoundStart(RoundStartingEvent ev)
+    {
+        // On cleanup all entities get purged so need to ensure audio presets are still loaded
+        // yeah it's whacky af.
+        _serverAudio.ReloadPresets();
+    }
 }