activity_main.xml

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <FrameLayout       
        android:id="@+id/home_fragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@+id/audioplayer_layout"/>

    <FrameLayout
        android:id="@+id/audioplayer_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_above="@+id/navigation"/>

    <android.support.design.widget.BottomNavigationView
        android:id="@+id/navigation"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="0dp"
        android:layout_marginStart="0dp"
        android:background="?android:attr/windowBackground"
        android:layout_alignParentBottom="true"
        app:menu="@menu/navigation" />

</RelativeLayout>