Zune to have ads?

Playfuls.com is reporting that Zune is going to have ads which, if watched, will offer either a discount or a free song. Their report says that these ads will be voluntary, but given Microsoft's historical take on DRM, one has to wonder if this is the case. Says Playfuls.com:

Well, the MP3 player that Microsoft is reading now boasts, besides the long commented wireless-fidelity capabilities, with the possibility to receive a bonus of some kind if the owner of the gadget agrees to watch entirely an advert presented on the screen (bonus that ranges from a discount coupon to voucher) and probably a larger screen. The gadget shall receive an ad from an “Ad-Node”, through a sensor integrated into the MP3 player, which is another indication of the iTunes rival that the Redmond giant is preparing.

This certainly isn't something that enhances the user experience, which is what it's going to take to be the "iPod killer". Of course, we'll have to wait and see how it comes out, but I don't know how promising Zune is.