Mr.Serge (or anyone who knows), how can i edit the config file?

I cannot find it with the default file manager and i used another one i downloaded from maemo.org

I wanted to add a subfont option, so i replaced the config file with a new one i made in my PC (as i didn't know how to edit the original)

Now, the subfont option works great, but i have one question:

What other options do you have in mplayer's original config file? (so i can put them in mine too)

Can you post it somewhere?