Hi! I have a PowerBook G4 with Audacity 2 (I think) and it has the Digital Audio In port. Really, its pretty simple, but all you have to do is grab a mobile devoce, laptop, compiter, Nintendo, Xbox, anything with YouTube and a headphone jack. Open a good song in YouTube on that device. Then pause the video when it loads and plug a 3.5mm AUX cable in the headphone jack. Turn the volume to 100% on your YouTube device. Plug the other end of that AUX cable into the Digital.Audio In port and open Audacity. Click record in Audacity and click play on the YouTube.Now you can get your favorite songs for free. I Can easily do this because I am a retro computer fan and I have dozens of old Macs but what if I want to tell other people how to do this but they don't have a retro apple computer? Does it work on Modern macOS or Modern Win11/Win10? Just wondering.