I am a touch typist and type around 70-90 WPM on a qwerty keyboard. I hadn't improved in years (even though I trained using typing programs). So I figured I'd give Dvorak a try.

After about 6 weeks I was up to around 75 WPM on Dvorak, but I stopped improving after that. I kept at it for another month or two, but never got back to my old qwerty speed.

Furthermore, the worst thing was that I started to get RSI like symptoms in my right hand from the Dvorak setup, something which I never ever had before, even with very extended periods of very intensive qwerty keyboard usage. So I switched back. Fortunately it took hardly any effort to get back to my old speed and the RSI symptoms disappeared.

If you really want to share a file, just go buy the CD, rip it, and put it online.

Futhermore I seriously doubt most people who buy music at the iTunes store
1) are going to know that this software exists
2) are going to care that this software exists
3) are going to run this software so they can share their music

Finally, Apple could easily (and might already) use digital watermarking to add personal information to the music file, which is a lot harder to remove (no I did not say impossible).

Basically, if they can make sharing iTunes files a bigger hassle than buying/ripping a physical CD and publishing that, the DRM is still effective.

That said, this software does matter for iTunes users. If you lose your iPod or your machine gets p4wned and your files get shared without you knowing, at least this software can make sure your name is not in the files in an easily readable format anymore.