1Open Sounds & Ringtones 
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2In System Sounds, tap Off to switch system sounds from Off to On for notifications, transitions, shutter click and the like. Tap On to switch system sounds from On to Off.
NOTE Calendar, Email and Messaging notification sounds are controlled separately. If you have notification sounds turned on in any of those apps (see Customise event notification sounds, Turn new email notifications on/off, and Customise messaging notifications), the sound plays even if you have System Sounds turned off. Note that the ringer switch must be on for any notification sound to play.
3Drag the Volume slider to set the system sounds volume.
Add ringtones to your smartphone
You can add a file in any of the following file types as a ringtone for your smartphone: MP3, AAC, AAC+, AMR, QCELP or WAV. How to use the file as a ringtone depends on the following: the file type, how you obtain the file and whether you want to use the file as a ringtone only or play it in the Music app.
You can obtain files to use as ringtones in any of the following ways:
•Download a ringtone from one of the many ringtone apps in App Catalog (see HP webOS App Catalog and Software Manager).
•Download an MP3 file that you want to use as a ringtone from the Amazon MP3 app (if available on your smartphone) (see Amazon MP3).
•Copy a file from your computer (see Copy a ringtone to your smartphone).
To use an AMR or QCELP file as a ringtone, the file must be stored in the ringtones folder in your smartphone's USB drive storage. Here's how to get the file into the correct folder:
•Files downloaded from App Catalog: The file is placed in the ringtones folder automatically.
•Files copied from your computer: You must place the file in the ringtones folder (see Copy a ringtone to your smartphone).
To use a file in the ringtones folder as a ringtone, see Select a file from the ringtones folder as a ringtone.
For MP3, AAC, AAC+ and WAV files, you have two options:
•To use the file as a ringtone only: Place the file in the ringtones folder (see Copy a ringtone to your smartphone). If the file is already on your smartphone, connect your smartphone to your computer as described in that procedure, navigate to the file and move the file to the ringtones folder. If you download a file from a ringtone app in App Catalog, it is automatically placed in the ringtones folder. To use a file in the ringtones folder as a ringtone, see Select a file from the ringtones folder as a ringtone.
•To both use the file as a ringtone and listen to the file in the Music app: Copy the file to your smartphone and place the file in any folder in your smartphone's USB drive storage except ringtones (see Copy files and folders using USB Drive mode). If you download an MP3 file from the Amazon MP3 app, it is automatically stored in a folder where you can both listen to it in the Music app and use it as a ringtone. To use the file as a ringtone, follow the steps in Select a song as a ringtone.
Select a file from the ringtones folder as a ringtone
The ringtone you select here applies globally to all incoming calls. You can also set a ringtone for an individual contact (see Add a ringtone to a contact).
1Open Sounds & Ringtones 
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182 Chapter 13 : Preferences