Recording at Home

My husband records music at home. He's quite talented at it and has two cd's that he recorded on his own in this way. He has one system set up right now though he has been talking about expanding on his system with speakers, monitors, and perhaps another computer altogether. I wasn't sure how he was going to manage multiple systems from one location until reading about a KVM switch. KVM stands for keyboard, video or visual display unit, mouse. This piece of hardware will let you control many computers from one device like a keyboard, monitor, and mouse. I wonder if my husband has heard of this and if it would work for what he needs it for.