Yep, That Belkin looks good. About time for some new cables myself. Good call.
I have a little story that is RCA related, but not boombox related. Back in the days of the "Cable man". I was living a small town, one cable company run by a family.
Was fighting with them for a few months, asking if they could carry a channel that would carry the NASCAR race and he told me no. So I told him I would be canceling my service and asked him to come over and pick up their equipment. When he arrived I was installing my new DirecTV dish on the roof. Before I could get off the roof, the bastard walked into my house and RIPPED the cable box out of my entertainment center and ripped the RCA's that went to my stereo out. The thing is, I had some high end gold plated RCA's that were so tight, it ripped the connectors off the PC board of the amp. They were still in the cable. Thankfully I was able to repair them, but I was pissed!
That was the last time I used those. No need for ultra tight connectors for me.