diff --git a/repository/TiddlyWiki/Tiddler.class.st b/repository/TiddlyWiki/Tiddler.class.st
index 902297a..06fc91e 100644
--- a/repository/TiddlyWiki/Tiddler.class.st
+++ b/repository/TiddlyWiki/Tiddler.class.st
@@ -180,7 +180,7 @@ Tiddler >> customFieldsWithMediaLinks [
 	| response |
 	response := OrderedDictionary new.
 	self customFields keysAndValuesDo: [:k :v | 
-		(v endsWithAnyOf: #('mp4' 'jpg' 'jpeg' 'png'))
+		(v endsWithAnyOf: #('mp4' 'wav' 'jpg' 'jpeg' 'png'))
 			ifTrue: [response at: k put: v ]
 	].
 	^ response
@@ -192,8 +192,19 @@ Tiddler >> deleteUid [
 ]
 
 { #category : #accessing }
-Tiddler >> downloadAndIndexMediaLinksInto: aFolder [
-	^ self customFieldsWithMediaLinks
+Tiddler >> downloadAndRelinkExternalMedia [
+	self customFieldsWithMediaLinks 
+		keysAndValuesDo: [:k :v |
+			(v endsWithAnyOf: #('mp4'))
+				ifTrue: [ | fileName filePath |
+					fileName := v asUrl segments last.
+					filePath := (FileLocator temp / fileName) fullName.
+					GtSubprocessWithInMemoryOutput new
+						shellCommand: 'curl -# ', v, ' -o ', filePath;
+						runAndWait; 
+						stdout
+				]
+		]
 ]
 
 { #category : #accessing }
diff --git a/repository/TiddlyWiki/TiddlyWiki.class.st b/repository/TiddlyWiki/TiddlyWiki.class.st
index 7d77d8b..1830e8b 100644
--- a/repository/TiddlyWiki/TiddlyWiki.class.st
+++ b/repository/TiddlyWiki/TiddlyWiki.class.st
@@ -256,6 +256,7 @@ TiddlyWiki >> exportContentType: aMimeType [
 { #category : #accessing }
 TiddlyWiki >> exportJSONFile [
 	| docTree rawJsonTiddlers |
+	self tiddlers isNotEmpty ifTrue: [^ self exportJSONFileFromTiddlers ].
 	self htmlFileExists.
 	docTree := XMLHTMLParser parse: self file contents.
 	rawJsonTiddlers := (docTree xpath: '//script[@class="tiddlywiki-tiddler-store"]') stringValue.
@@ -264,6 +265,21 @@ TiddlyWiki >> exportJSONFile [
 
 { #category : #accessing }
 TiddlyWiki >> exportJSONFileFromTiddlers [
+	| response |
+	response := '' writeStream.
+	response
+		nextPutAll: '['; cr.
+	self tiddlers allButLastDo: [:tiddler |
+		response 
+			nextPutAll: tiddler asJsonString;
+			nextPutAll: ','; cr 
+	].
+	response 
+		nextPutAll: self tiddlers last asJsonString; cr;
+		nextPutAll: ']'; cr.
+	^ MarkupFile 
+		exportAsFileOn: self folder / 'tiddlers.json' 
+		containing: response contents
 ]
 
 { #category : #accessing }