The soundly add on is quite remarkable. The free version lets you have 25 "voice overs" a day. The paid version is unlimited plus cloud storage so Im probably going to sign up for a month to check it out.
The voice over feature lets you script everything, as in I could do all the "announcements" and chat between songs, and then splice them into the program where I want. 275 different voices as well.
The best part is I'll be able to say what I want about posters here, and anyone who listens to the show will hear it.