I would like to add audio to both of my websites. Can anyone give me advice on how to do it, or how not to do it? I assume an inexpensive microphone would be easy enough to find, but what about the software?

I'm not looking for particularly high-quality sound, and don't want to spend much money. What I want to do, mostly on my other web-site, is to display Latin and Greek texts (I've got plenty of them already) with a button that would allow the reader to hear how the words sound. The Greek texts would be particularly interesting, since the language has pitch accents, like Chinese. I occasionally quote bits of Latin here, and it wouldn't hurt to have an audio button next to them for interested readers. I assume they would need only speakers and an MP3 player. Is all I need a microphone and some MP3 software?

As always, the comment section is open and awaits your advice.