Reply to Easter Egg? (Full Songs in Remix Decks)

Hey how's it going everybody? Maybe i'm just an idiot but I recently realized that the Remix Decks are capable of loading entire songs into each cell. This wasn't always the case. I believe when the Sample Decks were first released with the S4 they were only capable of holding between 30-50 seconds of audio. I just assumed that this was the case with the Remix Decks but I guess not.