If anybody wants the famous gooooooaal sound as your alert here it is. Download and change the ext from .zip to .wav. I just had to upload with the .zip extension as its a biggish file
Just save it as

/opt/signove-pelota-images/goal.wav

The easiest way and safest is to rename the original goal.wav something like goal1.wav first and then save the goooaal sound file as goal.wav.