I want to make a radio player based on Gnome MPlayer, but just for one radio station, some like a native radio application. I don't know if I have permission to modify MPlayer, but since is open source... An if I have permission to mofify it, where do i find the containing folder of it. This is what I want to create http://tixel.ro/images/onefm.png
as gertvdijk said, you dont need to modify mplayer, but to answer the question 'where do i find the containing folder of it'
that will show you where mplayer is installed, or atleast give you a symlink to the installation path. and to find out if its a symlink or not
that will tell you what kind of file it is and if its a symlink, it will also tell you what its linking too.