I would like to be able to play the Stockfish engine using the Arena GUI. I consulted the "playarena" site and the only instructions were to download and unpack the .tar.gz file. I did this but there is no makefile in the directory so I am not able to compile the Arena application with a 'make' command. what steps should I take to get Arena working with the Stockfish engine? I am new to linux and would appreciate any help. Thank you.