This is a car bootsound made for the GP2X. It is the sound of a car starting up.
Put it on an empty SD card and start your GP2X while holding Start + Select. A FIRMWARE UPGRADING screen will show up, then it should load back to the menu. Reboot and hear the new bootsound.
Put it on an empty SD card and start your GP2X while holding Start + Select. A FIRMWARE UPGRADING screen will show up, then it should load back to the menu. Reboot and hear the new bootsound.