You don’t have to be a musician to gain value from Kennis Russell’s very effective cable video. He wastes no time. He explains things well. He adds images to support learning and then he summarises at the end and you realise he taught you well! I use XLR cables for my microphone and I have a little mixer for my sound so I need to know about cables. When I changed computers and had to set up the sound again I ended up having to use my splitter RCA cable because the new computer didn’t have RCA jacks. Why bother? It’s about reliability, stability and integrity of sound. On a laptop it will label the jacks for microphone and headset so you know which ones to use. On a desktop you might get the coloured jacks without the labelling:
Pink is to connect the microphone
Green is the line out for the speakers or headphones
Blue is a line in for mp3 player, CD player or something like that.
Wifi and bluetooth sound are handy and convenient but they are not stable and reliable and always available. Wired connections are solid and until we move further along the path to dependable wireless connections then best quality sound comes from wired connections.