Copying files to server via smb from OSX

I am having problems copying files to the server for watching. Sometimes it works no problem. Other times it times out on the copy. It will sometims copy the file but in the library it shows up as 0 seconds long.

My computer is a macbook running latest osx. I see there is a new setting for smb.conf that may help, "fruit:aapl = yes" but cannot edit the file. Says it is on a readonly file system. What is the mechanism for editing the file? Are there other settings that could improve the speeds between OSX and Samba on the PI image?