Load music after mounting map

OpenRA.Game/GameRules/MusicInfo.cs

@@ -32,21 +32,9 @@ namespace OpenRA.GameRules
 
 			var ext = nd.ContainsKey("Extension") ? nd["Extension"].Value : "aud";
 			Filename = (nd.ContainsKey("Filename") ? nd["Filename"].Value : key) + "." + ext;
-
-			if (!GlobalFileSystem.Exists(Filename))
-				return;
-
-			Exists = true;
-			using (var s = GlobalFileSystem.Open(Filename))
-			{
-				if (Filename.ToLowerInvariant().EndsWith("wav"))
-					Length = (int)WavLoader.WaveLength(s);
-				else
-					Length = (int)AudLoader.SoundLength(s);
-			}
 		}
 
-		public void Reload()
+		public void Load()
 		{
 			if (!GlobalFileSystem.Exists(Filename))
 				return;

OpenRA.Game/ModData.cs

@@ -171,6 +171,11 @@ namespace OpenRA
 			using (new Support.PerfTimer("Map.SequenceProvider.Preload"))
 				map.SequenceProvider.Preload();
 
+			// Load music with map assets mounted
+			using (new Support.PerfTimer("Map.Music"))
+				foreach (var entry in map.Rules.Music)
+					entry.Value.Load();
+
 			VoxelProvider.Initialize(Manifest.VoxelSequences, map.VoxelSequenceDefinitions);
 			VoxelLoader.Finish();