Guitar Pro (from which .gp5 projects originate) allows users to export their projects to tablatures and music sheets as well as several audio files, including .wav files. So it is your best and probably only choice for GP5 to WAV conversion.
Convert Guitar Pro 5 project to WAVe PCM Sound, standard Windows sound format.
We have found 3 software records in our database eligible for .gp5 to .wav file format conversion.
Microsoft Windows software - convert gp5 to wav on Windows
A professional multi-track editor and music composer. Musicians uses Guitar Pro to create guitar and bass tablature. Also is used to write musical scores. It is available in versions for Windows, Mac, Linux and iOS.
Convert from gp5 file
to wav file
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned gp5 to wav. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
MuseScore is a free cross-platform WYSIWYG music notation program that offers a cost-effective alternative to commercial programs such as Sibelius and Finale.
Apple macOS / Mac OS X software - convert gp5 to wav on OS X
Guitar Pro is audio editor used to to edit tablatures for guitar, bass, and other fretted instruments from 4 to 8 strings.