Tab Widget and Listview combo

Question

Howdy, I am trying to combine the TabWidget and ListView Tutorials. Also I added a couple of buttons with no functions right now. Each tab is supposed to be a ListView (for right now). I run the app and it launches as just a ListView and no tabs. Here is the main.xml used in TabaWidget.java:

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="5dp">
    <LinearLayout
    android:orientation="horizontal"
    android:layout_width="fill_parent"
    android:layout_height="50dp"
    android:gravity="center_horizontal" >
    <Button
        android:id="@+id/MainMenu"
        android:layout_width="120dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="Main Menu" />
    <Button
        android:id="@+id/Sort"
        android:layout_width="120dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="Sort" />
   </LinearLayout>
<TabHost
    android:id="@android:id/tabhost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">
        <TabWidget
            android:id="@android:id/tabs"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" />
        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:padding="5dp" />
    </LinearLayout>
</TabHost>
</LinearLayout>

If the problem doesn't lye in there, then I can post other code as well. Thanks in advance.