This is poorly written and has little to nothing to do with iTunes. That means the reader spends a lot of wasted time trying to figure out what’s going on.
Is it cross platform? I just clicked on the link on my Mac, and while the screenshots look very much like a Mac, I'm only offered a PC download link and Windows system requirements.
[In case it was a problem with my ad-blocker, I disabled it, but then I got a huge ad with an embedded Download Now button (directly above the Songbird "Free For PC" button) that links to MacKeeper instead.]
It's sad that open source browsers and open web standards folks are doing the bidding of corporate interests. At this rate, we won't be able to own a permanent, portable "license" to a work, only rent a license locked to a particular device on a certain platform.
You might. There is a blockchain-based technology called "colored coins", and a few startups working to use it for DRM/digital ownership. It will be platform-independent.