I remember with nostalgia the mp3blaster. I spent years listening to it in my terminal. At one point I used only cli without graphical desktop on slackware and one of my TTYs was dedicated to it.

Turns out these times are forever gone - never to come back. The huge disappointment when I tried this on the first run to play a mp3 file from my local disk and it initiated outbound connection. Why a local CLI player needs outbound TCP connection to play a local file from my local disk?!?! The answer was in the source. It is called telemetry. Back then when I used mp3blaster we used to call this spyware, but the times had changed since then.