Are you an iTunes Match subscriber? If you are and you are still hearing ads, check to see that you have iTunes Match turned on on your iOS device (I'm assuming you were listening on iOS) or in iTunes on your computer.
Early on, I was hearing ads every now and then and realized that iTunes Match was somehow getting turned off on my iOS device and that's when ads started appearing.
My music blog: [
www.auditorymusings.net]
The Garden of the Gods in Colorado Springs, Colorado