They could just become software engineers, roll their own solution, start making more money that way, and give up music entirely.

Or they could use a platform that was explicitly designed to address their needs without any fuss.

You misunderstand me. I meant Faircamp could just set up the wordpress site for them instead of their solution that doesn't have payment integration.

My bad then. Hope they indeed do that.

It's trivial: get an FTP account, mount it locally with curlftpfs, and then use SVN or CVS on the mounted filesystem. A little stripe integration and you're off and running.