I understand that a stereo or mono (not sure which) headphone to headphone cable will work (the kind used to connect an iPod to a aux stereo port. Can get those from most any department store for couple dollars. Then you use a program that pulls the signal from the headphone jack of your computer and turns it into a controller signal. Hear it works pretty good, but can't remember the small freeware program needed to convert the signal. Maybe someone else can help with a name or link. It something like "PPLayer" or similiar.