If Okyweb4 is not updated to release 3.5 or above it is necessary to update it, following the normal procedure, as described on this page.

Once Okyweb4 is updated download this file with your PC (they are about 130MB).

Then copy the downloaded file on a USB stick to the root folder, preferably with only this file inside it.

Turn off Okyweb4, insert the USB stick into the Okyweb4, and turn it on again.
If the whole procedure has been carried out correctly, just before entering the list of songs, a pop-up appears asking to update the sounds: answer “YES” and the update starts.

Wait approximately 20 minutes.

Then switch off, switch on again, removing the flash drive