I have started experimenting with BroadcastMyself.
I would like to use it when I am doing live concert broadcasts instead of my LapTop. For that I ususally connect the line out of the venue's mixing console with a portable USB audio interface which also has additional microphone inputs. My LapTop creates a stream which is then sent to the shoutcast server.
From what I read BroadcastMyself can only use either the android's device built in mike or audio fies. Is that correct or is there any chance to connect an external USB audio IF?