In a bid to gain some street cred, SanDisk has contacted the Rockbox community to see if they would be interested in porting their software to the e200 series. While it is unlikely that they would officially support the open source Rockbox firmware, they could easily sponsor its development.
This hardware/software mash-up could be a killer combination, considering Rockbox has support for nearly every major codec, gapless playback, and 5-band equalizer to name a few of the features. While there has only been talk of this project on the Rockbox forum and IRC channels, a member of our forums has kicked the project off by creating firmware extraction utility.
If you are well verse in software and hardware programming, please head over to Rockbox and see how you can pitch in. If you are not a hardware hacker at heart you can help by emailing or calling SanDisk to tell them that you support their Rockbox initiative.