For audio production a free tool that's available is audacity, which you can use to record your audio. To make it into a podcast you will need to upload the mp3 file you make with audacity to a website and then create an rss file that will contain information about the podcast: Like the title, description, location of the actual mp3 file, etc.. After you make sure the rss file is correct you upload it to a website and that's what folks add to their podcast downloading software. I don't know how to make an rss file so I can't help there, but I know audio so if you need any help with that let me know.
Art is a good way to convey a complex idea/statement in a simple and easy to understand way. I do sound art which tends to be very avant-garde. I've only made one piece that others would be able to link with something real, Katrina. Videos like
this one is a good example of art that is both informative and entertaining. But anyway, art can be a powerful tool blah, blah, blah.............