First you need to download a Chrome app called TwistedWave. Once you the app all you have to do is record your message then save it to Google Drive. In the free version your recordings are limited to 5 minutes each and a total of one hour of total recording time. Once you move your files over to Google you can change the privacy settings then share them or link to them. It is really that easy!
If you want to learn more about the technical side of editing audio clips you will want to read Richard Byrne's post on Twisted Wave and watch his tutorial video.