diff --git a/matrix_appservice_kakaotalk/kt/client/client.py b/matrix_appservice_kakaotalk/kt/client/client.py
index 54191de..2945e70 100644
--- a/matrix_appservice_kakaotalk/kt/client/client.py
+++ b/matrix_appservice_kakaotalk/kt/client/client.py
@@ -326,9 +326,9 @@ class Client:
         text: str,
         reply_to: ReplyAttachment | None,
         mentions: list[MentionStruct] | None,
-    ) -> Chatlog:
+    ) -> Long:
         return await self._api_user_request_result(
-            Chatlog,
+            Long,
             "send_chat",
             channel_props=channel_props.serialize(),
             text=text,
@@ -346,9 +346,9 @@ class Client:
         width: int | None = None,
         height: int | None = None,
         ext: str | None = None,
-    ) -> Chatlog:
+    ) -> Long:
         return await self._api_user_request_result(
-            Chatlog,
+            Long,
             "send_media",
             channel_props=channel_props.serialize(),
             type=media_type,
diff --git a/matrix_appservice_kakaotalk/kt/types/chat/attachment/media.py b/matrix_appservice_kakaotalk/kt/types/chat/attachment/media.py
index ff54cad..50e7c4b 100644
--- a/matrix_appservice_kakaotalk/kt/types/chat/attachment/media.py
+++ b/matrix_appservice_kakaotalk/kt/types/chat/attachment/media.py
@@ -78,10 +78,11 @@ class FileAttachment(MediaKeyAttachment):
 
 
 @dataclass
-class AudioAttachment(MediaKeyAttachment):
-    # NOTE Changed superclass from Attachment
+class AudioAttachment(Attachment):
+    url: str
     d: int
     expire: Optional[int] = None
+    s: Optional[int] = None # NOTE Optional for inbound
 
 
 @dataclass
diff --git a/matrix_appservice_kakaotalk/portal.py b/matrix_appservice_kakaotalk/portal.py
index 8464396..9af624b 100644
--- a/matrix_appservice_kakaotalk/portal.py
+++ b/matrix_appservice_kakaotalk/portal.py
@@ -808,7 +808,7 @@ class Portal(DBPortal, BasePortal):
 
     async def _send_chat(
         self, sender: u.User, message: TextMessageEventContent, event_id: EventID | None = None
-    ) -> Chatlog:
+    ) -> Long:
         converted = await matrix_to_kakaotalk(message, self.mxid, self.log, self.main_intent)
         try:
             return await sender.client.send_chat(
@@ -837,9 +837,9 @@ class Portal(DBPortal, BasePortal):
     async def _handle_matrix_text(
         self, event_id: EventID, sender: u.User, message: TextMessageEventContent
     ) -> None:
-        chatlog = await self._send_chat(sender, message, event_id)
-        await self._make_dbm(event_id, chatlog.logId)
-        self.log.debug(f"Handled Matrix message {event_id} -> {chatlog.logId}")
+        log_id = await self._send_chat(sender, message, event_id)
+        await self._make_dbm(event_id, log_id)
+        self.log.debug(f"Handled Matrix message {event_id} -> {log_id}")
         sender.send_remote_checkpoint(
             MessageSendCheckpointStatus.SUCCESS,
             event_id,
@@ -867,7 +867,7 @@ class Portal(DBPortal, BasePortal):
             width = message.info.width
             height = message.info.height
         try:
-            chatlog = await sender.client.send_media(
+            log_id = await sender.client.send_media(
                 self.channel_props,
                 TO_MSGTYPE_MAP[message.msgtype],
                 data,
@@ -879,8 +879,8 @@ class Portal(DBPortal, BasePortal):
         except CommandException as e:
             self.log.debug(f"Error uploading media for Matrix message {event_id}: {e!s}")
             raise
-        await self._make_dbm(event_id, chatlog.logId)
-        self.log.debug(f"Handled Matrix message {event_id} -> {chatlog.logId}")
+        await self._make_dbm(event_id, log_id)
+        self.log.debug(f"Handled Matrix message {event_id} -> {log_id}")
         sender.send_remote_checkpoint(
             MessageSendCheckpointStatus.SUCCESS,
             event_id,
diff --git a/node/src/client.js b/node/src/client.js
index 088be0f..888358e 100644
--- a/node/src/client.js
+++ b/node/src/client.js
@@ -634,12 +634,13 @@ export default class PeerClient {
 	 */
 	sendChat = async (req) => {
 		const talkChannel = await this.#getUserChannel(req.mxid, req.channel_props)
-
-		return await talkChannel.sendChat({
+		const res = await talkChannel.sendChat({
 			text: req.text,
 			type: !!req.reply_to ? KnownChatType.REPLY : KnownChatType.TEXT,
 			attachment: !req.mentions ? req.reply_to : {...req.reply_to, mentions: req.mentions},
 		})
+		if (res.success) res.result = res.result.logId
+		return res
 	}
 
 	/**
@@ -655,14 +656,15 @@ export default class PeerClient {
 	 */
 	sendMedia = async (req) => {
 		const talkChannel = await this.#getUserChannel(req.mxid, req.channel_props)
-
-		return await talkChannel.sendMedia(req.type, {
+		const res = await talkChannel.sendMedia(req.type, {
 			data: Uint8Array.from(req.data),
 			name: req.name,
 			width: req.width,
 			height: req.height,
 			ext: req.ext,
 		})
+		if (res.success) res.result = res.result.logId
+		return res
 	}
 
 	/**