I cannot find the audio for this slide!

Hello people. This is my first post here, so I thank you in advance for all the help you could provide us.

Actually we don't create courses per se, but translate courses into several languages. We normally replace the texts, allocating the new language and images, together with new audio and video files.

So far (we have this license since a couple of months ago) we encounter no problems at all. Storyline courses are nice and clean to work with. However in this case, we cannot find where to replace the English audios with the Spanish ones. If you publish the attached slide you will see everything in Spanish, and also the first audio is in Spanish. Once you click the yellow background to continue and move the slider at the left you will hear the original English audio. Where is this coming from?? Thank you in advance again falks.

Best

JL