Hey YHR,

Actually it's fairly easy to install new sounds in your EL Mod SD card..
first you need a something that will read and write to the SD card, be it a lap top , PC or an adapter.
Next upon opening the SD card you will see a set of folders with numbers these are your blaster directories (do not change these, just the contents)
select the folder you wish to change and open it delete the current contents of that folder and copy in the new sounds from the replacement folder Example : like from the LEO folder
Does this help you?

Regards,

Bullyhys