Most browsers have an Adobe Flash Player plug-in that allows media from
any site to be played.  However, Chrome does not do this by default,
especially on Windows.  First, be sure this plug-in has been added to
Chrome.  If not, then download and install Adobe Flash Player plug-in
for Chrome.  Listed below are the steps to enable Media Gallery
resources in Chrome.

Older Chrome Browsers:

  -  Type chrome://settings/content/flash in address bar.
  -  Click/Touch Allow.
  -  Add ministrysense.duckdns.org/m2galleries.duckdns.org

Newer Chrome Browsers:

  -  Open your Media Gallery (media error).
  -  Click/Touch the circled "i" to the left of the address bar.
  -  Change Flash to Allow.
  -  Reload Chrome browser.

You should now be able to access Media Gallery resources using your
Chrome browser from Google, as long as your browser is not closed or
computer is not shut down.  If so, you will need to repeat the above
steps.  You may be able to place these domains:
      ministrysense.duckdns.org/m2galleries.duckdns.org
in your trusted sites zone, and avoid these steps;
using Settings/Advanced/System/Proxy settings.

Cross-Origin Resource Sharing (CORS) is a mechanism that uses additional
HTTP headers to tell a browser to let a web application running at one
origin (domain) have permission to access selected resources from a
server at a different origin.  A web application makes a cross-origin
HTTP request when it requests a resource that has a different origin
(domain, protocol, and port) than its own origin.  The CORS mechanism
supports secure cross-origin requests and data transfers between browsers
and web servers.  Modern browsers use CORS to help mitigate the risks of
cross-origin HTTP requests.  Sometimes users need to allow CORS in the
following ways.

  -  Enable CORS.
  -  Turn off Tracking Protection.
  -  Add domains (e.g. facebook.com) for CORS.

These steps are usually in Preferences or Tools/Options.
Doing so provides access to resources in your Media Gallery.

The Safari browser on iMac may have difficulties playing resources
in your Media Gallery, due to Cross-Origin Resource Sharing (CORS).
Listed below are the steps to work around this issue until Apple
fixes this bug.

  -  Click Safari/Preferences/Advanced.
  -  Click on Show Develop Menu in menu bar.
  -  Close window.
  -  Click Develop/User Agent/Internet Explorer 11.
  -  Click Send to reload page.

You should now be able to access resources in your Media Gallery
using your iMac/Safari browser.  Note that most user agents listed
will work, except for the first two--Default or Safari.