So, here's how things went. My sansa clip gave up the ghost, leaving me with a 16gb microsdhc card full of music and nothing to play it on. Thinking I could use rovkbox to make my e260 play nice with microsdhc, as several forum posts state, I decided to try it out.
Except... my player doesn't just not recognize the 16gb sdhc card. It doesn't recognize -any- cards, not even the 2gbmicrosd that I got way back when
To put it briefly; HEEEEEEEEEELP!