Interesting point. Although most albums and song are also ready to go months before they are released and in many cases could be a late editions to a game. Realistically, Rockstar wouldn't need the final masters of tracks until a few weeks or so before the game went gold. So it could be quite current.
In addition, with this whole fusion technology thing and the ability to place dynamic ads into games on the fly, surely this can be done with music too.
I also think there are many bands getting a revival from old songs going big in games, but this is an aside to your point.
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