Olga Zip Archive Browser is a small tool that allows you to open Olga files, allows you to open Olga files. You will be able to define an external viewer, use the internal one or just open the file with the associated program i.e. your favorite tab program or editor.
Once the index has been build you can go to options to define your favorite external viewer. If you want to use this viewer just uncheck Use Internal Viewer and the file will be opened with you own viewer. Leaving the External Viewer blank will cause the file to be opened with the associated program for that file type if Use Internal Viewer is unchecked.

The license of this software is Freeware, you can free download and free use this audio utility software.