Nero 6.0.0.15 mp3cd problem

After the Update, my pc speaker sings an annoying :Z ‘jingle’ while it checks the mp3 files I am adding to the comp (when choosing mp3cd from express). I can’t find anything on how to turn this off. Has anybody heard this?

TIA
chuck

have u disabled all sounds in preferences?

Yup, all three unchecked. Those sounds come from the soundcard anyway (when enabled). This sound comes from my pc internal speaker. Very odd. No, not a virus. Seems to be only from mp3cd format, as just choosing iso data disc does not do this.