This app let you create ringtone from music files.
★ Cut any Mp3 file with ease.
★ Best ringtone maker
★ Advanced features.
★ Create ringtones of your own.
★ Record your own music.
"Ringtone Cutter" App comes with Home Base Lock Screen which allows you to add your social feeds, favorite content updates, widgets, shortcuts to awesome apps and much more directly to your lock screen! Make sure you enable "Ringtone Cutter" lock screen after installation to get the complete experience.
This app is based on Ringdroid open-source project.
http://code.google.com/p/ringdroid/
Download