Sorry aliens but you'll need to go back to your science labs because we have since discovered how to compact discs themselves. No more data discs the size of records, we can fit an entire 70 minutes worth of full fidelity (to our ears) digital audio and then surpassed even that and managed to get it up to 74 minutes! 700 times 2 to the power of 23 bits of arbitrary data (or maybe it's just 700 times 8,000,000, we never did figure out the concept of honestly describing things marketers want to sell), all within our outstretched fingers or around a single extended finger.