I was just wondering if its against the rules to post some songs that were taken off the rockband store to release to the public

Don’t do that here. It’s too easy to do it right after official DLC gets pulled… and then people would just wait until they can pirate it, instead of paying ONE DOLLAR for Spinal Tap DLC.

I actually asked this once , but I got yelled at by C3 authors.

I do know a place where you can get discontinued DLC but I risk getting yelled at by the moderators if I tell you.