You should be able to do this with JavaScript, e.g. https://stackoverflow.com/questions/9236314/how-do-i-synchronize-the-scroll-position-of-two-divs

Hello John,
Yes, WebAudio is fully supported in XPUB2, iOS App, Android App and HTML outputs.
BUT, it will not work in the built-in preview, for mainly 2 reasons:

1. the preview is based on UIWebView
2. the examples requires a web server (using XMLHttpRequest)

So, to see it working, you have to use PubReader (XPUB2), or export an app (iOS or Android) or export HTML in a browser.

Here's a working example project:
https://www.dropbox.com/s/nssp07e2mpwvrie/audio-tests.pubcoder?dl=0

Check the last page in the project.

PubReader is back online on Google Play: https://play.google.com/store/apps/details?id=com.pubcoder.pubreader

I believe that you can achieve this with some javascript and css... for example:
https://stackoverflow.com/questions/2851663/how-do-i-simulate-a-hover-with-a-touch-in-touch-enabled-browsers

It's just not built into pubcoder at the moment. Maybe in the future...

Hello Manfred,
A tap represents the action of the user touching the area with its finger and promptly lifting it up.
The functionality that you're describing is not available in PubCoder without custom code.

Hello Phil,
you can find the link in PubCoder itself (see attached screenshot), BUT it appears Google has temporarily removed it from the Store, I will get back to you as soon as it's online again. Sorry for the inconvenience.

Hello Manfred,
we are a small company, we do our best to answer as soon as possible but we've to struggle between PubCoder, PubReader and Shelf development (macOS, Windows, iOS, Android), technical support, marketing, custom development, special projects and so on.

If you like the software, you can help us spreading the word so we can grow as a company and hire more people! ;-)

Also, we are happy to fix bugs and provide general support, but if you need us to help you with something specific to your project or write custom code for you, you will need to buy some consulting package from us. Please write to support if interested.

Best Regards,
Angelo

Hello Manfred,
this is a design problem. For example, you could use a button with actions that show and hide some "temporary" objects that highlight where the user can click...

Hello Manfred,
the autoplay setting is in the project inspector, just below Show Navigation Controls option.

As for the video issues, please send me your pubcoder project file here so I can have a look: https://www.dropbox.com/request/PJBumFBztDUg1r775tjj

Hello Mr Yalta,
I played with your app for a full 15 minutes and we really cannot reproduce the issue.
Also, it does not seem to be a generic problem, since none of our users reported this kind of problem.

There's not a release planned to fix the problem since we cannot reproduce it. Sorry.