MacBook Pro 13--Lion--Background services running?

[D Tilley]

Is there a source of info for background services or programs that might be running (and disabled) on a new MacBook Pro 13 -Lion 10.7.2 ?

Thanks--

ps -any antivirus, firewall-type stuff built-in?--this computer is for music play only, with occasional MOG (thru Chrome) use.

Getting good results (no dropouts, excellent SQ) with Itunes/ALAC and Grace m903.

 

[D Tilley]

Basic Lion 10.7.2 advice needed--to use MacBook 13 as music server only.

Thanks