$0.02...
From here it sounds fine, just hearing the rockers and maybe a teeny tiny exhaust leak. IMHO there is nothing that sounds like a spun rod bearing, I hear no knocking.
Questions will be answered by the oil. Drain it, look for shiny stuff and cut the filter open and do the same. You can run a magnet through it to find metal but the bearing material might not stick. It will just show as shiny little specs like stars in the night sky. Oil and filters are cheap (comparatively), so if needed do it a few times until you're confident in what you're seeing.
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