Audacity Bestandsextensies: een complete gids Bestand Beschrijving .au AU is Audacity Audio -bestand. .aup AUP is Audacity Project -bestand. .htb HTB is Audacity Help -bestand. .awi AWI is Audacity Wave Information Data. .aup3 AUP3 is Audacity Project (versie 3.x).