It's refering To the compression ratio of the music file! Most people rip music at a higher rate as thru a larger sound system it will be better quality, however the I touch has a li
It of 128 and anything above that is wasted! Higher compression uses bigger files! I normally say no when it asks me as I have a 32 gig iPod touch and a 16 gig iPhone!!! Quantity isn't an issue lol