[opensuse] Sound music only via headphone

My problem: Suse 10.2 and sound comes out only via headphone and not through the internal notebook speaker. Is there anywhere a switch? I m using mpg123 fpr playing mp3s. No X and no KDE etc. is running. Thanks for hints -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org