Tricked Out

start >file exploer> find song Hard tap> use as ringtone or for contact find contact >edit >click ringtone> find song and done.
not only mp3 can be used as ring tones.
and if you want to personalize text notifications
star>settings>sounds and notifications>notifications tab>scroll to "messages new text message" then second tab look for the sound you want ( highly recomend short clips here ( i have godzilla roar, and sometimes use trixie's laugh from speed racer anime)
L