@NounosSon yess manually this can be done but voice tracj automatic is good idea specially for new songs this give the radio station like a live dj is playing without any editing for the songs with external editor eg.soundforge
BTW, you can already do it: create scheduler event, check "Overlay playback" option, set the music level (so the music will be lowered down while jingle/voice track is playing). The jingle/voiceover/ or whatever you assign will be played together with music. You can assign a playlist with "select one track from playlist" option and use the "repeat" option.
The only thing here, that it won't take into account what track is playing, so you should play something general, like "thank you for listening us bla-bla".