My review is indeed on its predecessor Sansa Clip V2, but is transferable. I thank all the customers in front of me, who helped me with their advice in the selection and now möchste my experience with Rockbox and audible complement to perhaps even be helpful ;-) I hear del.time. Audio books and go to sleep and therefore the sleep function is allertollste the Sansa Clip. What's bugging me that are mp3mit several chapters often confused thrown even after renaming and track numbering. So have the tip picked up and installed Rockbox. It was really proud that I have managed that, but now were my Audible books disappeared and the unit was no longer recognized by Audible Manager. After long study of the instructions I've found the solution: installing Rockbox does not overwrite the original firmware. They will remain on the device. You just start the device other to use them. For the Sansa Clip it means:. Power button for about 3 seconds to move up while holding down the rewind / rewind button. It appears the Sansa Start menu of all folders and, indeed, the Audible folder. About this way also recognizes the PC with the Audible Manager, the device again. Hope it helps.