Amazon MP3 has dropped the price on a number of its top-selling songs to $0.69 each, nearly half the price of the majority of best-selling tracks on iTunes. The Los Angeles Times reports that it is unclear whether Amazon or the music labels themselves are eating the cost of the price reduction; currently discounted tracks include “Born This Way” by Lady Gaga, “On the Floor” by Jennifer Lopez, and “E.T.” by Katy…
