Skin for the whole screen

[bugsbunny]

I am new to BS player, but it seems that there is no such skin or feature in the player that allows to maximize the player to the whole screen without making video full-sized... It is really incinvinient to watch video when with my lateral sight I see pieces of windows and backgroud outside the video (video size is smaller than the screen size). Can someone advise me if there is such a skin that can be maximized for the whole screen leaving the area around video just black for example? (or maybe there is such feature, I didn't find...)
Thanks.