Thanks for the help. That should get me pointed in the right direction.
My cabinet is beat to hell, too. Looks like a common thing with these games. I have the player, but no tape. So will have to decide what route to go down the road. My first goal is to get a working game and then go from there.
I highly suggest the MP3 route, which I covered in one of my posts. I have a zip file with all four different audio tracks I've collected, which I gathered and cleaned up, editing down the file size and adding some filtering, to better emulate the tape quality.
There is the original track, two I got from koolmoecraig (an NWA 'F*** the Police' version, and a COPS track), plus the redub of the original script that John Jacobsen did for his John's Arcade channel, in his voice, which is kinda funny if you listen to his channel.
You can put each one on a different SD card, and pop each one in and out to change tracks, if you mount the player inside the coin door. (Or you can have all of them as one big track, and let it cycle through all of them.) Plus, it will let you switch over easily if/once I get a NATO Defense multikit working for these boardsets, though I don't have a copy of that track yet.
I can send you the zip file if interested, but it's currently stuck on an old laptop of mine that died, and I need to pull the drive and get a IDE to USB adapter, to access the drive as it's such an old machine. But once I pull it off I'll post it somewhere for anyone who wants it.