Oh free music how I love thee! You too can get free music with this free $2 MP3Credit offer from Amazon. Just enter the code MOMROCKS on this page and add the free credit to your Amazon account. Make sure to use this one before 11:59 p.m. PST on April 22, 2012. Limit one promotional credit per customer.
Here are some music suggestions:
One of the ones I am downloading is Moves Like Jagger because it has an awesome beat for running or spinning.