This is very straightforward but iSpringfree compared with iSpring Pro is very limited e.g. with the free version when you publish you don't have control over the player (for instance no option to choose no player) or the output dimensions. (see example below)
Also the iSpring HTML 5 output is a single html page plus a data subdirectory so you can't upload this via the xerte editor or workspace, you need to get it online somewhere first e.g. FTP/dropbox etc so that you can grab the URL and use that in Xerte either as a simple link or using the embed content or new window pages. Here's a simple example showing the difference between iSpring Free output (page 1) and iSpring Pro output (page 2)
mitchellmedia.co.uk/xot/play_155
Given what you've said in the offlist email you sent me I suspect the reason your attempt is showing a blank screen is local browser security settings. Put the same files online and it will probably work.
Ron