Yes, Simple Burner 2 is hosted at forums.minidisc.org, here:

http://forums.minidisc.org/downloads/details.php?file=2

You need to be registered with the forum to grab this download - registration is easy and free.

A nifty utility that allows one to rip cd's to MD without Sonicstage - it requires that it's installed, at least. This version is compatible with NetMD and Hi-MD, and also features PCM support.