res/xml/audio_prefs.xml

<?xml version="1.0" encoding="utf-8"?>
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Copyright (C) 2004-2013 Savoir-Faire Linux Inc.                     
                                                                    
Author: Alexandre Lision <alexandre.lision@savoirfairelinux.com>                   
                                                                    
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<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >

    <PreferenceCategory
        android:id="@+id/audio_codec_category"
        android:title="Audio" >
        <org.sflphone.views.AudioCodecListPreference
            android:id="@+id/audio_codecs"
            android:key="Audio.codec"
            android:persistent="false"
            android:title="Codecs" />
    </PreferenceCategory>
    <PreferenceCategory
        android:id="@+id/audio_ringtone_category"
        android:title="Ringtones" >
        <EditTextPreference
            android:id="@+id/audio_ringtone"
            android:defaultValue=""
            android:key="Audio.ringtone"
            android:persistent="false"
            android:summary=""
            android:title="Ringtone" />
    </PreferenceCategory>

</PreferenceScreen>