Not to completely put down the fancast idea, but Blimey Cow is a 400,000+ YouTube channel that has been making videos consistently since 2011. They have a massive audience that would be interested in talking about their videos on a weekly basis. making an Aux Cable fancast would be marketing to a nitche within a nitche. I’m completely onboard with starting a podcast, but it would need to be able to stand on its own at least a little bit.
And my only experience editing audio is when I sent in that question to The Inner Tube, where I filmed myself and converted it to audio format, but that came out fairly decent.