From the header of the daemon script:
Usage: prompt$./iTunesRemoteControlDaemon.scr &
So what this assumes is that you're in the same directory as this script (and that you've set it to be executable with "chmod u+x"). Just like any other script, when you type in ./someScriptName, it will execute if it's executable. Placing the ampersand should return your prompt to you. At that point, if you type in "ps -aux | grep iTunesRemoteControlDaemon.scr", you should see it without having to filter through anything.
Does that work for you?