[HTC Sensation] Mr-YC:
Thanks for your quick response. =)

I google-ed around and installed apktool.

Below are the codes from the xml files, but i don't know which to edit. Any help here?

<?xml version="1.0" encoding="utf-8"?>
<com.htc.preference.HtcPreferenceScreen android:title="@string/sound_settings" android:key="sound_settings"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:settings="http://schemas.android.com/apk/res/com.android.settings">
<com.htc.preference.HtcPreferenceCategory android:title="@string/sound_category_sound_title" android:key="sound_group" />
<com.htc.preference.HtcListPreference android:persistent="false" android:entries="@array/profile_item_list" android:title="@string/silent_list_title" android:key="silentlist" android:summary="@string/silent_mode_summary" android:dialogTitle="@string/profiles_dialog_title" android:entryValues="@array/animations_values" />
<com.htc.preference.HtcPreference android:persistent="false" android:entries="@array/profile_item_list" android:title="@string/silent_list_title" android:key="customize_silentlist" android:summary="@string/silent_mode_summary" android:dialogTitle="@string/profiles_dialog_title" android:entryValues="@array/animations_values" />
<com.htc.preference.HtcListPreference android:title="@string/musicfx_title" android:key="musicfx">
<intent android:targetPackage="com.android.musicfx" android:targetClass="com.android.musicfx.ControlPanelPicker" />
</com.htc.preference.HtcListPreference>
<com.android.settings.RingerVolumePreference android:persistent="false" android:title="@string/all_volume_title" android:key="ring_volume" android:summary="@string/volume_setting_summary" android:dialogTitle="@string/all_volume_title" android:streamType="ring" />
<com.htc.preference.HtcPreference android:persistent="true" android:title="@string/htc_beats_audio_settings_title" android:key="htc_sound_enhancer" />
<com.htc.preference.HtcCheckBoxPreference android:persistent="true" android:title="@string/vibrate_title" android:key="vibrate" android:summary="@string/vibrate_summary" android:dependency="silentlist" android:defaultValue="true" />
<com.htc.preference.HtcPreferenceCategory android:title="@string/sound_category_calls_title" android:key="sound_category_calls">
<com.htc.preference.HtcPreference android:persistent="true" android:title="@string/ringtone_title" android:key="ringtone" android:summary="@string/ringtone_summary" android:dependency="silentlist" android:dialogTitle="@string/ringtone_title" />
<com.htc.preference.HtcPreference android:persistent="true" android:title="@string/ringtone_title" android:key="ringtone_slot2" android:summary="@string/ringtone_summary" android:dependency="silentlist" android:dialogTitle="@string/ringtone_title" />
<com.htc.preference.HtcPreference android:persistent="true" android:title="@string/htc_ringtone_virbrate_title" android:key="ringtone_vibrate" android:summary="@string/htc_ringtone_virbrate_summary" android:dialogTitle="@string/htc_ringtone_virbrate_title" />
<com.android.settings.framework.preference.sound.HtcBePolitePreference android:dependency="silentlist" />
<com.android.settings.framework.preference.sound.HtcPocketModePreference android:dependency="silentlist" />
<com.android.settings.framework.preference.sound.HtcFlipToSpeakerPreference android:dependency="silentlist" />
</com.htc.preference.HtcPreferenceCategory>
<com.htc.preference.HtcPreferenceCategory android:title="@string/sound_category_notification_title" android:key="category_notification" />
<com.htc.preference.HtcPreference android:persistent="true" android:title="@string/htc_notification_sound_title" android:key="notification_sound" android:summary="@string/htc_notification_sound_summary" android:dependency="silentlist" android:dialogTitle="@string/htc_notification_sound_dialog_title" />
<com.htc.preference.HtcPreference android:persistent="true" android:title="@string/htc_notification_sound_vibrate_title" android:key="notification_sound_vibrate" android:summary="@string/htc_notification_sound_vibrate_summary" android:dialogTitle="@string/htc_notification_sound_vibrate_title" />
<com.htc.preference.HtcCheckBoxPreference android:persistent="false" android:title="@string/notification_pulse_title" android:key="notification_pulse" android:summary="@string/notification_pulse_summary" />
<com.htc.preference.HtcPreferenceCategory android:title="@string/sound_category_feedback_title" />
<com.htc.preference.HtcCheckBoxPreference android:title="@string/dtmf_tone_enable_title" android:key="dtmf_tone" android:defaultValue="true" android:summaryOn="@string/dtmf_tone_enable_summary_on" android:summaryOff="@string/dtmf_tone_enable_summary_off" />
<com.htc.preference.HtcListPreference android:persistent="true" android:entries="@array/htc_cdma_dtmf_tone_entries" android:title="@string/dtmf_tone_enable_title" android:key="htc_cdma_dtmf_tone" android:dependency="silentlist" android:defaultValue="0" android:entryValues="@array/htc_cdma_dtmf_tone_values" />
<com.htc.preference.HtcCheckBoxPreference android:title="@string/sound_effects_enable_title" android:key="sound_effects" android:defaultValue="true" android:summaryOn="@string/sound_effects_enable_summary_on" android:summaryOff="@string/sound_effects_enable_summary_off" />
<com.htc.preference.HtcCheckBoxPreference android:title="@string/lock_sounds_enable_title" android:key="lock_sounds" android:defaultValue="true" android:summaryOn="@string/lock_sounds_enable_summary_on" android:summaryOff="@string/lock_sounds_enable_summary_off" />
<com.htc.preference.HtcListPreference android:persistent="false" android:title="@string/powersaver_haptic_feedback" android:key="haptic_feedback_list" android:summary="@string/haptic_feedback_enable_summary_on" android:dialogTitle="@string/profiles_dialog_title" />
<com.htc.preference.HtcCheckBoxPreference android:title="@string/powersaver_haptic_feedback" android:key="haptic_feedback" android:defaultValue="true" android:summaryOn="@string/haptic_feedback_enable_summary_on" android:summaryOff="@string/haptic_feedback_enable_summary_off" />
<com.htc.preference.HtcCheckBoxPreference android:persistent="false" android:title="@string/roaming_ringtone_title" android:key="button_roaming_ringtone" android:summary="@string/roaming_ringtone_summary" android:dependency="silentlist" android:defaultValue="false" />
<com.htc.preference.HtcListPreference android:entries="@array/emergency_tone_entries" android:title="@string/emergency_tone_title" android:key="emergency_tone" android:summary="@string/emergency_tone_summary" android:entryValues="@array/emergency_tone_values" />
</com.htc.preference.HtcPreferenceScreen>