I downloaded like 10 songs in a row after installing. Suddenly, even after a reboot, every song says Need More Sources.. forever. I've waited hours to make sure. Whats the problem?

Perhaps they're copyright songs. In which case organisations will be spamming the network with fake files. See about this here Recognising fake files

When you get total search results in the thousands, you know that most will be fake. Instead choose those with just a few hosts to their name under the # column of the search results. Also, modem sharers are good ones to download from because they don't host fake files.

I read some of your other posts, and I've tried clicking modem ones, still no response. I tried clicking the lowest ones as well, with no success. I don't get it, if it says so many people have these songs, why can't I get it?

Try reading through this guide

How to find music Click Me