Audio not playing on Android (Kitkat 4.4.2 on LG G Pro 2 D838) via HTTPS

I am having issues playing an audio file on the chrome browser!

This audio file plays on the chrome browser on my mobile LG G Pro-2(D838) running Kitkat 4.4.2 without any issues. But when i uploaded this same file to our server and tried to open it on chrome browser, it does not play. Here is the link to the file at our server.

Now the server is configured for HTTPS access only. When I tried playing the file after enabling HTTP access, the audio played. Also, the images and other content on our server is accessible on the same mobile device via HTTPS. The audio file also plays on other mobile devices running same Android version(Google Nexus 4 running 4.4.2).

We are using certificate provided by StartSSL(free version).

Is there something wrong with the SSL certificate we are using? Or is it the problem with the device?