Please help with Auto Pan Scan issue

[Gothamite]

Hi all,
The issue is that whenever I want to watch some older movies that were shot in 4:3 ratio on my 16:9 monitor, BS Player always overscan it as full screen while I want it to play as original ratio of 4:3. Meaning I should see pillarboxed version of the film.

The problem is that when I use key 'O' it displays as it should be with pillarboxes but then when I watch other movies that were shot in 2.35:1 ratio, it overscans it again to full screen without letterboxing, basically zooming it and therefore losing picture information...

Is there any option to always start the movies in original ratio?

Thanks