our room on soulseek isn’t closed or something, it’s just invisible, when nobody is in there.
if you want to enter the room, right click in the rooms window, then a little form will show up, it’s called create/join room. type Dinosaur Jr 101 (case sensitive!) then you’ll be the first at that time to be in the room, and it will appear in the room list.
then I’d recommend to right click in the room and pick "toggle autojoin", then you’ll enter the room automatically the next time you come to soulseek.
And, have you guys seen, that soulseek has an upload function now? this means you can send files to someone else 
but you have to change the file sharing configuration first (under "options"), about from whom you’ll accept uploads.