Like many who’ve posted on this forum, my Express quit working suddenly and none of the fixes worked but then I put in a MicroSD card as someone mentioned and that did it!
I wanted to let all of you know that there is a WORSE player than the Express, though. Because I didn’t think that I’d ever get it working and I didn’t want to buy another Flash Battery player (I’ve got a Sansa M240 which uses an AAA battery and the read out is visible outdoors but it isn’t expandable) so after researching several I bought a GPX 2 GB expandable MP3 player but it is almost impossible to use! The menus aren’t really menus - you need to press several buttons to get anything and it’s really hard to tell what you’ve selected - never mind that the volume controls aren’t marked at all and like the Express it’s impossible to see the read out outdoors!