<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_checked="false"
        android:drawable="@drawable/guis_sound_off" />

    <item android:state_checked="true"
        android:drawable="@drawable/guis_sound_on" />

</selector>