Mixed Media? Photos and an MP3

Hello, I’m a newb - I may be missing something obvious, so if I am, please forgive me!
I’d like to use my Pi3 with OSMC as a slide show (I have an USB memory stick with lots of images - and one MP3 audio file) I’d like to play the audio file (say) every 10 minutes, while the pictures are playing in the slideshow. Is this possible? If so, how do I do it?
Thanks, in advance
Dub

Well I assume this explains how to do it
http://kodi.wiki/view/Pictures#Playing_Music_with_your_SlideShow

An alternative should be this
http://kodi.wiki/view/Add-on:Artist_Slideshow