Mark Arigo announced his successful port of Rockbox to the Sandisk Sansa c200 series, and following those footsteps MrH brought mi4code 1.0.1 with built-in keys for the most recent c200 firmwares.

While on the subject of mi4 based players: If you are the owner of a Sandisk Sansa e200R model, please help us out a bit by running e200tool on your target and get a dump of the i2c rom for us!

(Update: we got a dump, thanks. No need for more at this point.)