Looking at the project, the paid features are paywalled even if you spin it up yourself

I never said I agreed with leeching, but if you’ve ever used soulseek you would know its a rampant issue on the platform

This is not legal advice, and I cannot speak if this applies to the country you live in. Most of the time, you will only receive a notice in the mail if you are uploading content, not downloading. Look into a program called Soulseek, it’s essentially what replaced Limewire, and it gives you the option to search for files without sharing anything back. You will likely run into issues grabbing full albums as leeching (not sharing files while downloading) is frowned upon