HTC Thunderbolt User Manual page 273

Trimming an MP3 ringtone
The Music app has a built-in ringtone trimmer. You can trim an MP
song and set a part of it as your ringtone.
1. On the Playback screen, press MENU, and then tap More > Set as
ringtone > Trim the ringtone.
2. Use the onscreen controls to trim your ringtone.
1 Trim sliders
 Left button
 Right button
4 Play/Pause button
5 Markers. (These show where the ringtone starts and ends.)
1

Photos, videos, and music 7
5
4