The fifo_music channel variable (which can be set globally in freeswitch.xml) will control the music that's played in the fifo.
If this is so, then what is the "music file" for? Which one overrides which?
Q: Can someone provide an example of a classic call queue functionality? e.g. oldest call to specific extension triggers ringing of a call group or extension while newer calls to same extension ring on idle phones.
Q: What does importance do?
Q: The high-level description doesn't make it clear whether or not multiple agents are called simultaneously. Are they?