go to ur sound control device which is usually located at the lower right hand side that looks like a speaker sorta, and then go under options->properties and select record and press okay, and now it should list the sources of recording, select record master which is usually the first one, and then exit it, and go to a recording program like microsoft sound recorder, and press record and then find that place in ur movie and press play and it should work, all assuming u have a pc.