Yeah idk why you spread misinformation like that. File up/downloads are done via a p2p connection (see a reverse-engineered documentation of the p2p connection process) and thus the IP addresses are obviously known. Maybe not directly visible in the SoulseekQt client itself, but definitely through third party network connection monitors like Wireshark. It’s pretty trivial for anyone using Soulseek to get IPs of the people they download from.