Sure!
Make sure to turn USB mode away from Overbridge, then-
From Tutorial - Loading Sound Packs? - #2 by TrabanT
Just go to the Global Menu:
Sysex Receive → +Drive Sound → Load “Anywhere” (This will put the sounds into the next available empty slots/bank.
Select “Yes” when “Anywhere” is selected. The A4 will begin listening for Sysex
Shift+Select all sound files that are loaded into C6 and click “Send”
You should see A4 receiving the sounds, then you’ll see them in your +Drive, to be enjoyed how you wish!
Let me know if you have any problems there.