set up puter for d-j'n

[slingslingbinks]

i want to set up my puter to do d-j'n, i have over 5,000 song's on it as of now and think i need a amp and a way to hook in a microphone to the amp. it would be easer than carting around all of my c-d's, also any one have any input on setting up a puter for karokee to play cd+g disk. tk's sling