Seriously? No credible alternative? CDs are a credible alternative. Seriously. Not to mention any number of music managers, archos, sony, zune etc.
I mean, they might SUCK, but some people think cars that aren't beemers SUCK, it's hyperbole to say that sony isn't credible.
You can buy a sony product, download mp3s from amazon and listen to music.
What makes that not a credible alternative?