Macd with sound alert

Hi all,
Could someone put a sound alert on the macd only when this indicator goes from - 0 to + 0 and from + 0 to -? Or is there already an indicator of that kind?
Thank you on avance for your answer.

That would be an Ma cross Alert that you are after. The fast Ma crossing over the Slow one, in the case of standard MACD would be the 12 ema/26 ema. Search the Forum for the above indicator, there are loads of them.