I would first suggest that you click on the little music note in the right hand upper corner. Then choose Setup.
In Setup, I have mine set to associate all file types. It plays the style files.
Your computer may have another program selected to play style files. You may need to find that and change it.
I would suggest that you right-click on a style file, select "Open With" and then "Choose Program". Then, although sometimes it is slow to open, you will be able to associate the style files with VanBasco. Be sure to check the box that says "always use this program".
I'm assuming you are running Windows!
DonM
_________________________
DonM