Ringtones on BLU Studio X Plus

[Jim_Shu]

Trying to set phone ringtone from an mp3 that is on both phone storage and SD card. Long press, menu, then I choose Set as phone ringtone. Doesn't show up in list of ringtones. Since this method doesn't work, does anyone know where the ringtones are stored. Maybe I can do it through my PC but I can't find them that way either. Do I maybe need Root access to get to them?

Thanks in advance.