Make the Android camera app shut the fuck up

Note: this require root access to the terminal; also, this has been only tested under CyanogenMod 7.1 (Gingerbread) and MIUI.us 4.0.3 (Ice Cream Sandwich) ROMs.

basically you'll have to remount the /system filesystem read-write, make the /system/media/audio/ui/camera_click.ogg unavailable (by either deleting it, renaming it, or changing its permissions), and eventually remount the /system filesystem read-only.

here is a script that you can put on your sdcard, and execute after each system upgrade (the name of your device's partition may be different): 

mount -o remount,rw /dev/block/mtdbblock3 /system
chmod 640 /system/media/audio/ui/camera_click.ogg
mount -o remount,ro /dev/block/mtdbblock3 /system