use shadowbook to play next song in itue

Open Terminal (Terminal.app in /Applications/Utilities)
Type: emacs ./shadow_nextsong and validate with enter.
This open the file shadow_nextsong in the text editor emacs.
Paste the line:
/Triggered/ { print $0; system("osascript -e \"tell application \\\"iTunes\\\" to play next track\";"); }
Press Ctrl-x then Ctrl-s to save the file.
Press Ctrl-x then Ctrl-c to quit emacs.

Launch ShadowBook.app
In the Terminal, paste the line:
tail -f /Library/Logs/Console/501/console.log | awk -f ./shadow_nextsong and validate with enter.

Next time you'll want to use it, if you didn't move or deleted the file shadow_song, you'll only need to execute the last 2 step

thanks to http://forums.macosxhints.com/showthread.php?t=57844