Hot Crab Dip

"This recipe was given to us by one of my hubby's coworkers.  It is so delicious and the best thing about it is that it's made in the slow cooker so it's perfect to make for parties.  Take it along to your next hors d'oeuvre party and be the hit of the bash!"     1/2 cup milk 1/3 cup salsa 3-(8 ounce) packages of cream cheese 16 ounces o