Rockbox – the Open Source Jukebox Firmware – has finally released a “stable” release with Rockbox Version 3.0.
Rockbox solved all the annoyances I had with the Original Sansa firmware. The only major feature outstanding form Rockbox is USB support for disk access and charging (currently have to boot into the OF for USB access). But there are people already working on this feature in Rockbox and a full implementation can’t be far away.
Update 2009-04-27:
Sometime around Rockbox 3.2 the USB support was enabled! This means Rockbox and now connect as a USB disk and Charge battery, all without booting into the OF! It was worth the wait.