This would be a great addition to those who use PortableApps on their iPods or other similar device and also use the RockBox firmware. It's a zipped download and runs on the system. It doesn't install anything, but does require admin access in order to modify the firmware of the music device (at least it does on my system). The installer is needed to install the initial firmware replacement as well as periodic upgrades to the RockBox software, so having it on the player in which it is used would be a good idea.