Sarging is running game to pick up (or at least attempt to pick up) women.
I believe the term originally came from Ross Jeffries. Originally, the term was limited to picking women using Ross' methods. But over time, the term evolved in the Community. Currently, the term sarging is used to mean picking up women using ANY method (or no method if you use purely unstructured natural game).
Getting back to the OP's question, before going out sarging, I recommend listening to music that gets you in "game mode." For example, it could be club music that gets you in the mood to go out.
Or listen to the sarging song somebody did...
http://www.youtube.com/watch?v=Z-N2os74Mdc