I don't know about all that, I have been using Spiral Frog, and all it takes is to use an audio converter and you can stick it on your Zune. I synched my friend's Zune, and it works.

As for it not working on iPods, it's your fault you got a device that's already crawling with DRM, so don't complain that you got an mp4 player.

To get rid of the ads, just Adblock the image in FF or if you're smart use the IE7 Pro plugin for IE7 and just filter the image out.

Don't complain, it's legit, well-organized music, and it's free. Your fault you supported Jobs, so don't play sour grapes.