Signal-Android/app/src/main/res/layout/voice_note_player_stub.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/voice_note_player_view_background">

    <org.thoughtcrime.securesms.components.voice.VoiceNotePlayerView
        android:id="@+id/voice_note_player_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="?selectableItemBackground" />
</FrameLayout>