I am trying to use the sf-play~ objects. inside the stereofile~ object there is an object that is called pdcontrol . (from else library)

It won't load on my pd.

I included all the libraries that needed.
Any idea what can it be?

[pdcontrol] is a vanilla object. I can't remember when it was included, but it wasn't long ago. There's a chance your Pd is quite old, especially if you have an old Raspbian image, and you installed Pd with apt-get. Either compile the latest Pd from sources, or get a newer Raspbian image that will get you a newer Pd with apt-get. Then you'll be able to load [pdcontrol].

I have hard time to connect to interne on my pi. is there any way I can install pure data from disk on key on my pi?

edit: solved.