Rant on Music (Remade)

How do I get my music to save to the iTunes library?
I download my music form Frostwire(same thing as Limewrire). I get the music in the library and it goes to my iPod and everything. The next day when I go to iTunes, the music is not in the iTunes library BUT it is still in my iPod and everything. The only way I can listen to music on iTunes is if i plug in my iPod. Otherwise there is no music on the library. What can I do?

I made a bunch of rants years ago that got removed for copyrighted music and everyone keeps asking me to put the back up. So here is the first rant I ever did, check it! PS I’m a hypocrite, I listen to rap hahaha! PSS If you want me to rant about something else, leave it in the comments!