Is there some sort of reason as to why the Audio mp3 sermons are not playing at all?

You might need other codecs. I'd recommend downloading and installing K-Lite Codec Pack Full, which includes Media Player Classic. That should sort out the problem. You might want to save the Audio MP3s and play them on your computer, rather than from online in your web browser.

By the way - when downloading programmes, you should not download from sites such as download.com and tucows and others. They like to add adware and similar things in their bundles, so be careful.

Thankyou