[Icecast] Mystery Song Artist Shows in Listener Stats

[Steve Matzura]

For a very long time--years in fact--I have had a problem with one of 
the replays on the server I manage. For this one replay only, which is a 
program of two hours duration, the bottom of the statistics table for 
the stream says the current song is xxx/the-show-name, and the 'xxx' in 
question bears no relation to the current song. In fact, there *is* no 
currents song--the file that's playing has no other metadata in it 
except the name of the program in the MP3 title field, and the name of 
the presenter in the MP3 artist field. What could be causing this? Where 
does this "current song" data come from?