I was just signing up for their free krill sample and discovered that they have a webpage where you can download free music. Here is the link to the details: http://instoresnow.walmart.com/In-Stores-Now-Music-Downloads.aspx
Also, (new to me) There are these free tools: http://instoresnow.walmart.com/In-Stores-Now-Free-Tools.aspx
The one that caught my attention was the food swapper. It reminded me of eat this, not that ( a free email you can get from Men's health or you can buy the books).