eHow - Computershttp://www.ehow.com/guide_5-http://www.ehow.com/guide_5-computers.html.htmlwww.ehow.comHow to Make an MP3 Into a Ringtonehttp://www.ehow.com/how_4994196_make-mp-ringtone.htmlTurning an MP3 into a ringtone requires audio editing software, a USB port and cables or the ability to email an MP3 to a phone. Convert a computer MP3 file into a ringtone with tips from a computer technician in this free video on computer software. Published on 5/2/2009