diff --git a/ios/zeus.xcodeproj/project.pbxproj b/ios/zeus.xcodeproj/project.pbxproj
index 061bc365f..856dcba28 100644
--- a/ios/zeus.xcodeproj/project.pbxproj
+++ b/ios/zeus.xcodeproj/project.pbxproj
@@ -223,10 +223,10 @@
 		FEEEEFC0248849C8BFB0F9A4 /* ldk.png in Resources */ = {isa = PBXBuildFile; fileRef = CEF377B5DB424EBBB4249CA4 /* ldk.png */; };
 		FF3AC496C4DE4B86AEC22CA7 /* MintToken.svg in Resources */ = {isa = PBXBuildFile; fileRef = C06B8930D07546EA8605E869 /* MintToken.svg */; };
 		NWC1A2B3C4D5E6F700000001 /* NWCAudioKeepAlive.m in Sources */ = {isa = PBXBuildFile; fileRef = NWC1A2B3C4D5E6F700000002 /* NWCAudioKeepAlive.m */; };
-		NWCAUDIO0000000000000010 /* Soft Pulse.mp3 in Resources */ = {isa = PBXBuildFile; fileRef = NWCAUDIO0000000000000014 /* Soft Pulse.mp3 */; };
-		NWCAUDIO0000000000000011 /* Fireplace.mp3 in Resources */ = {isa = PBXBuildFile; fileRef = NWCAUDIO0000000000000015 /* Fireplace.mp3 */; };
-		NWCAUDIO0000000000000012 /* White Noise.mp3 in Resources */ = {isa = PBXBuildFile; fileRef = NWCAUDIO0000000000000016 /* White Noise.mp3 */; };
-		NWCAUDIO0000000000000013 /* Gentle Rain.mp3 in Resources */ = {isa = PBXBuildFile; fileRef = NWCAUDIO0000000000000017 /* Gentle Rain.mp3 */; };
+		NWCAUDIO0000000000000010 /* Soft Pulse.m4a in Resources */ = {isa = PBXBuildFile; fileRef = NWCAUDIO0000000000000014 /* Soft Pulse.m4a */; };
+		NWCAUDIO0000000000000011 /* Fireplace.m4a in Resources */ = {isa = PBXBuildFile; fileRef = NWCAUDIO0000000000000015 /* Fireplace.m4a */; };
+		NWCAUDIO0000000000000012 /* White Noise.m4a in Resources */ = {isa = PBXBuildFile; fileRef = NWCAUDIO0000000000000016 /* White Noise.m4a */; };
+		NWCAUDIO0000000000000013 /* Gentle Rain.m4a in Resources */ = {isa = PBXBuildFile; fileRef = NWCAUDIO0000000000000017 /* Gentle Rain.m4a */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -704,10 +704,10 @@
 		FDE09436C88E4DCA980DA7DE /* zeus_illustration_6a.jpg */ = {isa = PBXFileReference; explicitFileType = undefined; fileEncoding = 9; includeInIndex = 0; lastKnownFileType = unknown; name = zeus_illustration_6a.jpg; path = ../assets/images/zeus_illustration_6a.jpg; sourceTree = "<group>"; };
 		NWC1A2B3C4D5E6F700000002 /* NWCAudioKeepAlive.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = NWCAudioKeepAlive.m; path = zeus/NWCAudioKeepAlive.m; sourceTree = "<group>"; };
 		NWC1A2B3C4D5E6F700000003 /* NWCAudioKeepAlive.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = NWCAudioKeepAlive.h; path = zeus/NWCAudioKeepAlive.h; sourceTree = "<group>"; };
-		NWCAUDIO0000000000000014 /* Soft Pulse.mp3 */ = {isa = PBXFileReference; lastKnownFileType = audio.mp3; name = "Soft Pulse.mp3"; path = "zeus/Soft Pulse.mp3"; sourceTree = "<group>"; };
-		NWCAUDIO0000000000000015 /* Fireplace.mp3 */ = {isa = PBXFileReference; lastKnownFileType = audio.mp3; name = Fireplace.mp3; path = zeus/Fireplace.mp3; sourceTree = "<group>"; };
-		NWCAUDIO0000000000000016 /* White Noise.mp3 */ = {isa = PBXFileReference; lastKnownFileType = audio.mp3; name = "White Noise.mp3"; path = "zeus/White Noise.mp3"; sourceTree = "<group>"; };
-		NWCAUDIO0000000000000017 /* Gentle Rain.mp3 */ = {isa = PBXFileReference; lastKnownFileType = audio.mp3; name = "Gentle Rain.mp3"; path = "zeus/Gentle Rain.mp3"; sourceTree = "<group>"; };
+		NWCAUDIO0000000000000014 /* Soft Pulse.m4a */ = {isa = PBXFileReference; lastKnownFileType = file; name = "Soft Pulse.m4a"; path = "zeus/Soft Pulse.m4a"; sourceTree = "<group>"; };
+		NWCAUDIO0000000000000015 /* Fireplace.m4a */ = {isa = PBXFileReference; lastKnownFileType = file; name = Fireplace.m4a; path = zeus/Fireplace.m4a; sourceTree = "<group>"; };
+		NWCAUDIO0000000000000016 /* White Noise.m4a */ = {isa = PBXFileReference; lastKnownFileType = file; name = "White Noise.m4a"; path = "zeus/White Noise.m4a"; sourceTree = "<group>"; };
+		NWCAUDIO0000000000000017 /* Gentle Rain.m4a */ = {isa = PBXFileReference; lastKnownFileType = file; name = "Gentle Rain.m4a"; path = "zeus/Gentle Rain.m4a"; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFileSystemSynchronizedBuildFileExceptionSet section */
@@ -876,10 +876,10 @@
 				13B07FB01A68108700A75B9A /* AppDelegate.mm */,
 				NWC1A2B3C4D5E6F700000003 /* NWCAudioKeepAlive.h */,
 				NWC1A2B3C4D5E6F700000002 /* NWCAudioKeepAlive.m */,
-				NWCAUDIO0000000000000014 /* Soft Pulse.mp3 */,
-				NWCAUDIO0000000000000015 /* Fireplace.mp3 */,
-				NWCAUDIO0000000000000016 /* White Noise.mp3 */,
-				NWCAUDIO0000000000000017 /* Gentle Rain.mp3 */,
+				NWCAUDIO0000000000000014 /* Soft Pulse.m4a */,
+				NWCAUDIO0000000000000015 /* Fireplace.m4a */,
+				NWCAUDIO0000000000000016 /* White Noise.m4a */,
+				NWCAUDIO0000000000000017 /* Gentle Rain.m4a */,
 				13B07FB51A68108700A75B9A /* Images.xcassets */,
 				13B07FB61A68108700A75B9A /* Info.plist */,
 				13B07FB11A68108700A75B9A /* LaunchScreen.xib */,
@@ -1657,10 +1657,10 @@
 				13B07FBF1A68108700A75B9A /* Images.xcassets in Resources */,
 				97D6EBB726C487DC002ADC8C /* ioslauncher.png in Resources */,
 				13B07FBD1A68108700A75B9A /* LaunchScreen.xib in Resources */,
-				NWCAUDIO0000000000000010 /* Soft Pulse.mp3 in Resources */,
-				NWCAUDIO0000000000000011 /* Fireplace.mp3 in Resources */,
-				NWCAUDIO0000000000000012 /* White Noise.mp3 in Resources */,
-				NWCAUDIO0000000000000013 /* Gentle Rain.mp3 in Resources */,
+				NWCAUDIO0000000000000010 /* Soft Pulse.m4a in Resources */,
+				NWCAUDIO0000000000000011 /* Fireplace.m4a in Resources */,
+				NWCAUDIO0000000000000012 /* White Noise.m4a in Resources */,
+				NWCAUDIO0000000000000013 /* Gentle Rain.m4a in Resources */,
 				74F9D7F22AF33324007D44BF /* PPNeueMontreal-Medium.otf in Resources */,
 				74C5F97A2D5311BC003840C4 /* PPNeueMontreal-Bold.otf in Resources */,
 				74C5F97B2D5311BC003840C4 /* PPNeueMontreal-Book.otf in Resources */,
diff --git a/ios/zeus/Fireplace.m4a b/ios/zeus/Fireplace.m4a
new file mode 100644
index 000000000..c4be3e195
Binary files /dev/null and b/ios/zeus/Fireplace.m4a differ
diff --git a/ios/zeus/Fireplace.mp3 b/ios/zeus/Fireplace.mp3
deleted file mode 100644
index 973b2099e..000000000
Binary files a/ios/zeus/Fireplace.mp3 and /dev/null differ
diff --git a/ios/zeus/Gentle Rain.m4a b/ios/zeus/Gentle Rain.m4a
new file mode 100644
index 000000000..f45af6126
Binary files /dev/null and b/ios/zeus/Gentle Rain.m4a differ
diff --git a/ios/zeus/Gentle Rain.mp3 b/ios/zeus/Gentle Rain.mp3
deleted file mode 100644
index b1e11df96..000000000
Binary files a/ios/zeus/Gentle Rain.mp3 and /dev/null differ
diff --git a/ios/zeus/NWCAudioKeepAlive.m b/ios/zeus/NWCAudioKeepAlive.m
index 532fb25d2..3e2a32e69 100644
--- a/ios/zeus/NWCAudioKeepAlive.m
+++ b/ios/zeus/NWCAudioKeepAlive.m
@@ -264,15 +264,15 @@ RCT_EXPORT_METHOD(setMuted:(BOOL)muted
 
 - (BOOL)loadAndPlayTrackAtIndex:(NSInteger)index error:(NSError **)outError {
     NSString *trackName = self.trackNames[index];
-    NSString *path = [[NSBundle mainBundle] pathForResource:trackName ofType:@"mp3"];
+    NSString *path = [[NSBundle mainBundle] pathForResource:trackName ofType:@"m4a"];
     if (!path) {
         if (outError) {
             *outError = [NSError errorWithDomain:@"NWCAudioKeepAlive"
                                             code:3
                                         userInfo:@{NSLocalizedDescriptionKey:
-                                                   [NSString stringWithFormat:@"Audio resource not found: %@.mp3", trackName]}];
+                                                   [NSString stringWithFormat:@"Audio resource not found: %@.m4a", trackName]}];
         }
-        NSLog(@"[NWCAudio] Resource not found: %@.mp3", trackName);
+        NSLog(@"[NWCAudio] Resource not found: %@.m4a", trackName);
         return NO;
     }
 
diff --git a/ios/zeus/Soft Pulse.m4a b/ios/zeus/Soft Pulse.m4a
new file mode 100644
index 000000000..90709ae58
Binary files /dev/null and b/ios/zeus/Soft Pulse.m4a differ
diff --git a/ios/zeus/Soft Pulse.mp3 b/ios/zeus/Soft Pulse.mp3
deleted file mode 100644
index 385bb712a..000000000
Binary files a/ios/zeus/Soft Pulse.mp3 and /dev/null differ
diff --git a/ios/zeus/White Noise.m4a b/ios/zeus/White Noise.m4a
new file mode 100644
index 000000000..64110e3ae
Binary files /dev/null and b/ios/zeus/White Noise.m4a differ
diff --git a/ios/zeus/White Noise.mp3 b/ios/zeus/White Noise.mp3
deleted file mode 100644
index d8e29cad7..000000000
Binary files a/ios/zeus/White Noise.mp3 and /dev/null differ