Just one hip-hopping employee downloading tunes all day can sap your computer resources and expose you to legal problems, not to mention kill that worker's productivity. Added grief: The Recording Industry Association of America threatens legal action against companies that don't crack down on workplace music swapping. Advice: Make sure your computer usage policy prohibits illegal downloads, plus outlines punishments. And check into software that can help you monitor or block MP3 music file downloads. Examples: www.securecomputing.com, www.mimesweeper.com and www.websense.com.