Multiple RCA sound inputs?

Hey guys,

I'm looking for an input device of some kind that will allow me to monitor the sound on my survailliance system. The DVR card i have has a pin header sticking off the pcb which i believe is sound input for the 4 video channels. There was no box or information with the card so i cant verify this. I'd like to know if there is a product that will let me input 4 channels of mono audio through RCA jacks. I need somthing internal or auto cycling as the system will be in the maintainence room of my building.

Thanks for the help
-Jaims

Here is a variety of audio interfaces.

Great resourse Eclec. Thats almost exactly what i was looking for. I did find some some of the more expencive internal cards that were on that site but i dont need to spend $200+ to hear who's at my front door :)

I'll probly pick up one of the usb cheap-o jobbies.