I'm on Xbox One and I went through the process on a friend's Xbox 360 of exporting Rock Band 1, but I have no idea how to get the songs onto Rock Band 4. I cannot find any videos or articles anywhere that actually show or explain the Xbox One side of things. I know that when you export you are saving the files onto a drive, but do you actually need the drive to import them back into RB4? I was hoping xbox would realize I had done the download/export, but I do not even see the individual songs or pack in the Add-Ons section of the store to get them.

You can't do anything with exports right now. It's something that they are including in the future.

Game exports are not available as DLC for RB4 yet, just gotta wait until they are.

I was literally looking for the answer for this everywhere on the internet, and I couldn't find anything.

Then I come to the forums on my homepad of Giant Bomb? Immediately find the answer.

Our community - it's the fucking greatest.

Harmonix just put out an update, RB1,2,Lego,GreenDay are still TBD (along with like AC/DC and some track packs?). They are also working on RB3 exports that they plan on having available by the end of the year. They haven't clarified how they're going to verify that you own/purchased RB3 but the export for that game is going to be $14.99.