Can I display more than 1 video or audio on a page?

Yes, you can place more then one video on a page or post, with the exception of 360 VR video because at this time of writing, when you activate two 360 video's on the same page and you interact with one of them, the other pans with it. You can 360 VR on our demo site:
With the other formats, there is in theory no limit, but keep in mind the more you add, the heavier your page will become, which is bad for SEO. Although we tested 13 videos on one page without problems, the ideal maximum is up to 6 videos on the same page/post.