Changing Your Ringtones And Alarms; Choosing A Preset Sound Set - HTC Thunderbolt User Manual

The center thumbnail in Leap view is always the main Home screen.

Changing your ringtones and alarms

Select, create, and download sound sets (different collections of
ringtone, notification sounds, and alarm) so that you can instantly
change from subtle ringtone and notification sounds while you're in
the office into something fun when you're out with friends.

Choosing a preset sound set

1. Press HOME
2. On the Sound sets screen, tap a sound set name.
, and then tap
Personalizing 65
> Sound set.