Apparently, according to the creator :

When you visit https://tv.theindiebeat.fm - bottom right, there's a pink follow button and you can follow the channel from your Fediverse server and the account will post when different shows are going live or when the chat is open. There's also a schedule button which says when all the different genre hours are on too. On the left under the live channel, there's also a "now playing" feature that links directly to the artist currently playing.