Conversion of mp3 files to gp5 file format

You cannot take an MP3 song and convert it directly to Guitar Pro file (.gp5, gpx etc.). You would have to tab it yourself in the program, or another alternative music notation software. Some viable, albeit imperfect, alternative would be to generate a MIDI file from the MP3 with some mp3 to midi converter and import the resulting file in Guitar Pro.

Open MP3 file    Open GP5 file