diff --git a/Mac/AppAssets.swift b/Mac/AppAssets.swift
index 1c37e71fd..21c22c35a 100644
--- a/Mac/AppAssets.swift
+++ b/Mac/AppAssets.swift
@@ -297,7 +297,7 @@ struct AppAssets {
 	
 	static var notificationSoundBlipFileName: String = {
 		//	https://freesound.org/people/cabled_mess/sounds/350862/
-		return "notificationSoundBlip.caf"
+		return "notificationSoundBlip.mp3"
 	}()
 
 	
diff --git a/NetNewsWire.xcodeproj/project.pbxproj b/NetNewsWire.xcodeproj/project.pbxproj
index a8f4adbf3..02bb24a27 100644
--- a/NetNewsWire.xcodeproj/project.pbxproj
+++ b/NetNewsWire.xcodeproj/project.pbxproj
@@ -853,7 +853,9 @@
 		D5F4EDB720074D6500B9E363 /* WebFeed+Scriptability.swift in Sources */ = {isa = PBXBuildFile; fileRef = D5F4EDB620074D6500B9E363 /* WebFeed+Scriptability.swift */; };
 		D5F4EDB920074D7C00B9E363 /* Folder+Scriptability.swift in Sources */ = {isa = PBXBuildFile; fileRef = D5F4EDB820074D7C00B9E363 /* Folder+Scriptability.swift */; };
 		DD82AB0A231003F6002269DF /* SharingTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = DD82AB09231003F6002269DF /* SharingTests.swift */; };
-		DDE6A35128E8741F00612823 /* notificationSoundBlip.caf in Resources */ = {isa = PBXBuildFile; fileRef = DDE6A35028E8741F00612823 /* notificationSoundBlip.caf */; };
+		DDF9E1D728EDF2FC000BC355 /* notificationSoundBlip.mp3 in Resources */ = {isa = PBXBuildFile; fileRef = DDF9E1D628EDF2FC000BC355 /* notificationSoundBlip.mp3 */; };
+		DDF9E1D828EDF2FC000BC355 /* notificationSoundBlip.mp3 in Resources */ = {isa = PBXBuildFile; fileRef = DDF9E1D628EDF2FC000BC355 /* notificationSoundBlip.mp3 */; };
+		DDF9E1D928EDF2FC000BC355 /* notificationSoundBlip.mp3 in Resources */ = {isa = PBXBuildFile; fileRef = DDF9E1D628EDF2FC000BC355 /* notificationSoundBlip.mp3 */; };
 		DF5AD10128D6922200CA3BF7 /* SmartFeedSummaryWidget.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1768144D2564BCE000D98635 /* SmartFeedSummaryWidget.swift */; };
 		DFD6AACF27ADE86E00463FAD /* NewsFax.nnwtheme in Resources */ = {isa = PBXBuildFile; fileRef = DFD6AACD27ADE86E00463FAD /* NewsFax.nnwtheme */; };
 		DFFB8FC2279B75E300AC21D7 /* Account in Embed Frameworks */ = {isa = PBXBuildFile; productRef = 51BC2F4A24D343A500E90810 /* Account */; settings = {ATTRIBUTES = (CodeSignOnCopy, ); }; };
@@ -1596,7 +1598,7 @@
 		D5F4EDB620074D6500B9E363 /* WebFeed+Scriptability.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "WebFeed+Scriptability.swift"; sourceTree = "<group>"; };
 		D5F4EDB820074D7C00B9E363 /* Folder+Scriptability.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Folder+Scriptability.swift"; sourceTree = "<group>"; };
 		DD82AB09231003F6002269DF /* SharingTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = SharingTests.swift; sourceTree = "<group>"; };
-		DDE6A35028E8741F00612823 /* notificationSoundBlip.caf */ = {isa = PBXFileReference; lastKnownFileType = file; path = notificationSoundBlip.caf; sourceTree = "<group>"; };
+		DDF9E1D628EDF2FC000BC355 /* notificationSoundBlip.mp3 */ = {isa = PBXFileReference; lastKnownFileType = audio.mp3; path = notificationSoundBlip.mp3; sourceTree = "<group>"; };
 		DFD6AACB27ADE80900463FAD /* NewsFax.nnwtheme */ = {isa = PBXFileReference; lastKnownFileType = wrapper; path = NewsFax.nnwtheme; sourceTree = "<group>"; };
 		DFD6AACD27ADE86E00463FAD /* NewsFax.nnwtheme */ = {isa = PBXFileReference; lastKnownFileType = wrapper; path = NewsFax.nnwtheme; sourceTree = "<group>"; };
 		DFFC199727A0D0D7004B7AEF /* NotificationsViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationsViewController.swift; sourceTree = "<group>"; };
@@ -1860,7 +1862,7 @@
 		511D43CE231FA51100FB1562 /* Resources */ = {
 			isa = PBXGroup;
 			children = (
-				DDE6A35028E8741F00612823 /* notificationSoundBlip.caf */,
+				DDF9E1D628EDF2FC000BC355 /* notificationSoundBlip.mp3 */,
 				DFD6AACB27ADE80900463FAD /* NewsFax.nnwtheme */,
 				51DEE81126FB9233006DAA56 /* Appanoose.nnwtheme */,
 				51077C5727A86D16000C71DB /* Hyperlegible.nnwtheme */,
@@ -3392,6 +3394,7 @@
 				65ED405D235DEF6C0081F399 /* SidebarKeyboardShortcuts.plist in Resources */,
 				514A89A3244FD63F0085E65D /* AddTwitterFeedSheet.xib in Resources */,
 				51D0214726ED617100FF2E0F /* core.css in Resources */,
+				DDF9E1D828EDF2FC000BC355 /* notificationSoundBlip.mp3 in Resources */,
 				5103A9F5242258C600410853 /* AccountsAddCloudKit.xib in Resources */,
 				65ED405E235DEF6C0081F399 /* DefaultFeeds.opml in Resources */,
 				51333D3C2468615D00EB5C91 /* AddRedditFeedSheet.xib in Resources */,
@@ -3448,9 +3451,9 @@
 				51F85BF32272531500C787DC /* Dedication.rtf in Resources */,
 				51077C5A27A86D16000C71DB /* Hyperlegible.nnwtheme in Resources */,
 				516A09422361248000EAE89B /* Inspector.storyboard in Resources */,
+				DDF9E1D928EDF2FC000BC355 /* notificationSoundBlip.mp3 in Resources */,
 				51DEE81A26FBFF84006DAA56 /* Promenade.nnwtheme in Resources */,
 				1768140B2564BB8300D98635 /* NetNewsWire_iOSwidgetextension_target.xcconfig in Resources */,
-				DDE6A35128E8741F00612823 /* notificationSoundBlip.caf in Resources */,
 				5103A9B424216A4200410853 /* blank.html in Resources */,
 				51D0214826ED617100FF2E0F /* core.css in Resources */,
 				84C9FCA42262A1B800D921D6 /* LaunchScreenPhone.storyboard in Resources */,
@@ -3499,6 +3502,7 @@
 				B27EEBF9244D15F3000932E6 /* stylesheet.css in Resources */,
 				5144EA3B227A379E00D19003 /* ImportOPMLSheet.xib in Resources */,
 				844B5B691FEA20DF00C7C76A /* SidebarKeyboardShortcuts.plist in Resources */,
+				DDF9E1D728EDF2FC000BC355 /* notificationSoundBlip.mp3 in Resources */,
 				5103A9F4242258C600410853 /* AccountsAddCloudKit.xib in Resources */,
 				51077C5827A86D16000C71DB /* Hyperlegible.nnwtheme in Resources */,
 				84A3EE5F223B667F00557320 /* DefaultFeeds.opml in Resources */,
diff --git a/Shared/Resources/notificationSoundBlip.caf b/Shared/Resources/notificationSoundBlip.caf
deleted file mode 100644
index 07c4a8a62..000000000
Binary files a/Shared/Resources/notificationSoundBlip.caf and /dev/null differ
diff --git a/Shared/Resources/notificationSoundBlip.mp3 b/Shared/Resources/notificationSoundBlip.mp3
new file mode 100644
index 000000000..f22ba4752
Binary files /dev/null and b/Shared/Resources/notificationSoundBlip.mp3 differ
diff --git a/iOS/AppAssets.swift b/iOS/AppAssets.swift
index 8a3f89746..9c7faca3d 100644
--- a/iOS/AppAssets.swift
+++ b/iOS/AppAssets.swift
@@ -327,7 +327,7 @@ struct AppAssets {
 	
 	static var notificationSoundBlipFileName: String = {
 		//	https://freesound.org/people/cabled_mess/sounds/350862/
-		return "notificationSoundBlip.caf"
+		return "notificationSoundBlip.mp3"
 	}()
 	
 }