Is it possible to connect laptop's sound on Sanyo 3 disc CD changer, so that i could hear it loud?

[Adove P]

I have Sanyo 3 disc CD changer with video adapter. I am trying to watch movie from the projector but had sound problem, so was thinking if it was possible to connect my laptop sound to Sanyo sound so that i can hear the movie dialog loud and make my home a theatre....any help and suggestion will be appreciated. thank you