Radio and podcasts are two very powerful means of communication today.
Both the radio, (which is usually done live with time limits), as well as the podcasts (that are used today to talk about anything or do all kinds of musical experiments), provide us with promotion and help us to communicate with our audiences in different ways. The trend is that the podcast is gaining a lot of ground because it allows you to download it and listen to it wherever and whenever you want, so both media are still great audience promoters.