How to convert .gtp scores directly to .mp3 audio format.
Converting Guitar Pro Tablatures (versions 1 & 2) directly to MP3 Audio Files (.gtp to .mp3 conversion) is certainly possible and quite straightforward, even though your options are somewhat limited.
Use the latest version of Guitar Pro, which allows users to import GTP tablatures and export them in MP3 format.
A multi-track editor and music composer for guitars
A free cross-platform music notation software