[Icecast] Ices generates lots of email warnings

[Steve Matzura]

I can't say whether this is either an Ices or a CentovaCast issue, but
there are certain programs that play perfectly normally but generate
just piles of email about invalid sample rates or frames containing
metadata that's not supported. Is there a way to turn these emails
off? One of them recently was over four thousand lines long, which
really shocked me, and it takes a lot to shock me.