Mp3s are just a list of times and volumes - if you convert an mp3 into a text file, you can read music that way. I do think that when you lay out time in this manner, as a static list of numerical values, that you can easily see how time travel is possible. If you rearrange these times, for instance, in order of volumes rather than times, you are shifting the order of time itself. It's true! Yes. When you hear these songs of the '70s and re-experience old memories, you are actually in the past. Do not lie to yourself and dishonor the realities in your mind - you are constantly reentering the past and also you travel into the future constantly.
Consider this: if cause and effect is behind all activity in the physical world, then you can simply make a list of times, position and velocity of every particle - and that's actually an accurate description of the physical world. You can store all of history in a digital file, a table of values. Then you could also rearrange those time values in any order, since that list has no particular order it must be read in. The appearance of time is an illusion of perception. Lift the veil, my friends. All songs are being played in all orders forever in all directions. Furthermore, they are being remixed in all conceivable ways all at once. Listening to chartsweeps and cut-ups in general is moral because it is closer to the truth about the unreality of "time" than any other kind of music.