diff --git a/app/src/main/java/jp/juggler/subwaytooter/ActMediaViewer.kt b/app/src/main/java/jp/juggler/subwaytooter/ActMediaViewer.kt
index ca7f8fc0..bad7fddd 100644
--- a/app/src/main/java/jp/juggler/subwaytooter/ActMediaViewer.kt
+++ b/app/src/main/java/jp/juggler/subwaytooter/ActMediaViewer.kt
@@ -343,7 +343,7 @@ class ActMediaViewer : AppCompatActivity(), View.OnClickListener {
 		}
 	}
 	
-	val mediaSourceEventListener = object : MediaSourceEventListener {
+	private val mediaSourceEventListener = object : MediaSourceEventListener {
 		override fun onLoadStarted(
 			dataSpec : DataSpec?,
 			dataType : Int,
diff --git a/app/src/main/java/jp/juggler/subwaytooter/api/entity/TootAttachment.kt b/app/src/main/java/jp/juggler/subwaytooter/api/entity/TootAttachment.kt
index a565f9ac..f438f02c 100644
--- a/app/src/main/java/jp/juggler/subwaytooter/api/entity/TootAttachment.kt
+++ b/app/src/main/java/jp/juggler/subwaytooter/api/entity/TootAttachment.kt
@@ -75,6 +75,7 @@ class TootAttachment(serviceType:ServiceType,src : JSONObject) : TootAttachmentL
 				this.type = when{
 					mimeType.startsWith("image/")  -> TootAttachmentLike.TYPE_IMAGE
 					mimeType.startsWith("video/")  -> TootAttachmentLike.TYPE_VIDEO
+					mimeType.startsWith("audio/")  -> TootAttachmentLike.TYPE_VIDEO
 					else-> TootAttachmentLike.TYPE_UNKNOWN
 				}