CemeteryMan69

I recently snagged a supercharger on ebay and am trying to load games using an mp3 player. The problem I'm running into is that the headphone jack is a little too big. Anyone know what size adapter I can use to get this to plug into a mp3 player? Thanks.

I have a Fairchild Channel F that I believe has a problem with the psu. I've found a few things online that seem to match my issue. When I power it on I get a garbled image onscreen and the tv still prduces the static sound. Although I was able to find some info indicating the issue was with the psu, I have not found any info on how this problem might be corrected. I have attached a pic of the video output on a CRT. If anyone has any ideas, please let me know. I really want to get this old sytem up and running again.