.nomedia files are used to tell media players not to scan certain folders.
StudioKUMA .nomedia Manager is a simple tool to manage .nomedia files in your SD card. Just tap and hold to toggle, or you can also perform multi-select.
NOTE: For Samsung devices (both Tablets and Phones) with Android 3.2, only internal storage can set .nomedia flags as the system deny access to SD card by 3rd party apps