Well, you know, there's not much difference between read/write and read-only as long as the disk is spun up. The empeg could keep newly defined playlists in memory until it needed to access the disk for normal operations and do it during that time, mounting rw instead of ro just for that instance. It should also have an indication that it needs to flush until it does, but since the user requested that it store something, the user should know. It should also have a menu option to manually flush. It should also probably try to flush when the ignition is cut, as that probably means the car isn't moving. It ought to not turn off the display immediately in that case, but show something like ``Writing -- Please Wait'' until it's done, at which point it'd cut off.

I don't think that would be too difficult.

Then again, you can save bookmarks as is. It'd be nice if they were accessible via emplode for premanent storage, though. That'd be a nice feature. Probably more useful, too, as trying to enter a name for the playlist and organize it in the car would probably be more trouble (and danger) than its worth.