Spanner 5 in Reaper: The Channel-Layout Fix You Need to Know

I take a hands-on look at Spanner 5, The Cargo Cult's immersive channel panning plugin, now available in VST3 and Audio Unit alongside its long-standing Pro Tools version. I show how it handles panning, up-mixing, and down-mixing across Reaper, solve a Reaper specific channel routing issue, and share my honest verdict.