Download and install PhoneZap onto your phone (featured app on installer). With it you can create your own ringtones from the music files on your phone. It allows you to set a starting time and ending time so that you can cut the part that you want for the ringtone, you can prview it, change the settings and once your happy with the result you can then convert that section to a ringtone at the push of a button. Way easier than searching the net