Guess I am an idiot. I tried to rockbox my e270 ($49 refurb via Woot!). Despite following directions, all I got was a black startup screen that harkened back to the days of DOS. I finally got frustrated and just reverted back to the original Sansa firmware. My issue is every time I turn the thing on, it refreshes the database (a two-minute process). I googled the problem, but none of the fixes seem to work. Just decided to live with it. Someone online says if you use the sd card, it refreshes every time. But when I remove the card, it still refreshes.
The e270 has 6GB plus I added the aforementioned 2GB sd card. Good price for a decent 8GB DAP with FM, voice recorder, etc.
Anyway, Rockbox is a little too geeky for my limited talents. And not even sure if it would get rid of that refresh database annoyance.