@agreeable_landfall @jwz the Sansa fuze is different to the iPod. It has different drivers and different bugs. As it happens the fuze v1, in common with the iPod 5, doesn’t reliably work over usb with rockbox. There’s definitely a bug tracking this for fuze v1, but I’m not sure about for the iPod. (Source: I’ve had a half-dozen fuzes, v1 and v2, actually tried to fix this very bug but failed, and now use an iPod 5 with rockbox)