diff --git a/OSBindings/Mac/Clock Signal/Info.plist b/OSBindings/Mac/Clock Signal/Info.plist
index 459574a27..e81a98e39 100644
--- a/OSBindings/Mac/Clock Signal/Info.plist	
+++ b/OSBindings/Mac/Clock Signal/Info.plist	
@@ -16,12 +16,12 @@
 			<string>cartridge</string>
 			<key>CFBundleTypeName</key>
 			<string>Atari 2600 Cartridge</string>
-			<key>CFBundleTypeOSTypes</key>
-			<array>
-				<string>????</string>
-			</array>
 			<key>CFBundleTypeRole</key>
 			<string>Viewer</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.item</string>
+			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
 			<key>NSDocumentClass</key>
@@ -40,8 +40,7 @@
 			<string>Viewer</string>
 			<key>LSItemContentTypes</key>
 			<array>
-				<string>org.akop.cocoamsx.filetype.cartridge</string>
-				<string>com.clocksignal.rom</string>
+				<string>public.item</string>
 			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
@@ -60,6 +59,10 @@
 			<string>Electron/BBC UEF Image</string>
 			<key>CFBundleTypeRole</key>
 			<string>Viewer</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.item</string>
+			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
 			<key>NSDocumentClass</key>
@@ -76,6 +79,10 @@
 			<string>Commodore Program</string>
 			<key>CFBundleTypeRole</key>
 			<string>Viewer</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.item</string>
+			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
 			<key>NSDocumentClass</key>
@@ -92,6 +99,10 @@
 			<string>Tape Image</string>
 			<key>CFBundleTypeRole</key>
 			<string>Viewer</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.item</string>
+			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
 			<key>NSDocumentClass</key>
@@ -108,6 +119,10 @@
 			<string>Commodore Disk</string>
 			<key>CFBundleTypeRole</key>
 			<string>Editor</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.item</string>
+			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
 			<key>NSDocumentClass</key>
@@ -124,6 +139,10 @@
 			<string>Commodore 1540/1 Disk</string>
 			<key>CFBundleTypeRole</key>
 			<string>Editor</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.item</string>
+			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
 			<key>NSDocumentClass</key>
@@ -144,6 +163,10 @@
 			<string>Electron/BBC Disk Image</string>
 			<key>CFBundleTypeRole</key>
 			<string>Editor</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.item</string>
+			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
 			<key>NSDocumentClass</key>
@@ -160,6 +183,10 @@
 			<string>Disk Image</string>
 			<key>CFBundleTypeRole</key>
 			<string>Editor</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.item</string>
+			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
 			<key>NSDocumentClass</key>
@@ -177,6 +204,10 @@
 			<string>ZX80 Tape Image</string>
 			<key>CFBundleTypeRole</key>
 			<string>Viewer</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.item</string>
+			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
 			<key>NSDocumentClass</key>
@@ -195,6 +226,10 @@
 			<string>ZX81 Tape Image</string>
 			<key>CFBundleTypeRole</key>
 			<string>Viewer</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.item</string>
+			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
 			<key>NSDocumentClass</key>
@@ -211,6 +246,10 @@
 			<string>Tape Image</string>
 			<key>CFBundleTypeRole</key>
 			<string>Viewer</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.item</string>
+			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
 			<key>NSDocumentClass</key>
@@ -227,6 +266,10 @@
 			<string>Tape Image</string>
 			<key>CFBundleTypeRole</key>
 			<string>Viewer</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.item</string>
+			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
 			<key>NSDocumentClass</key>
@@ -243,6 +286,10 @@
 			<string>Amstrad CPC Tape Image</string>
 			<key>CFBundleTypeRole</key>
 			<string>Viewer</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.item</string>
+			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
 			<key>NSDocumentClass</key>
@@ -259,6 +306,10 @@
 			<string>HxC Disk Image</string>
 			<key>CFBundleTypeRole</key>
 			<string>Viewer</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.item</string>
+			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
 			<key>NSDocumentClass</key>
@@ -277,8 +328,7 @@
 			<string>Viewer</string>
 			<key>LSItemContentTypes</key>
 			<array>
-				<string>org.akop.cocoamsx.filetype.cassette</string>
-				<string>com.clocksignal.cas</string>
+				<string>public.item</string>
 			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
@@ -296,6 +346,10 @@
 			<string>Disk Image</string>
 			<key>CFBundleTypeRole</key>
 			<string>Viewer</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.item</string>
+			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
 		</dict>
@@ -310,6 +364,10 @@
 			<string>MSX Tape Image</string>
 			<key>CFBundleTypeRole</key>
 			<string>Viewer</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.item</string>
+			</array>
 			<key>LSTypeIsPackage</key>
 			<integer>0</integer>
 			<key>NSDocumentClass</key>