If I plug in a USB microphone into a PS3 will my voice come out through the speakers? I also want to play some karaoke dvd's and hoping this will work. Any suggestions? Will this work?

no i've tried. not for karaoke however.

i've plugged a rock band mic into the ps3, and it will not come out on XMB. you have to be playing a song in rock band to have the mic work.

you can try it, but i highly doubt it will work, just try it.