help, alert sound for retracement finder

is there anyone willing to help me...
1) how to change the sound of the alert ???
2) how to make the alert sound many times when the magenta histogram appear (it's only sound once when it appear)

1. In the options menu on your platform, change the file name association for the alert to another file or your own custom file in the sounds folder.
2. Use a For loop.

which part should i change, sorry i really" don't know. can you tell me ??

//+------------------------------------------------------------------+
//| WoodiesCCI.mq4 |
//| thorr |
//| modded by Mediator |
//| http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "histogram colour update by [email protected] Moneytec chat: thorr; created by Luis Damiani; converted by Rosh; modded by Mediator"

#property indicator_separate_window
#property indicator_buffers 5
#property indicator_color1 Black
#property indicator_width1 2
#property indicator_color2 Black
#property indicator_width2 2
#property indicator_color3 Magenta
#property indicator_width3 2
#property indicator_color4 Yellow
#property indicator_width4 2
#property indicator_color5 Aqua
#property indicator_width5 2
//---- input parameters
extern double A_period=8;
int B_period=8;
int neutral = 0;
extern int num_bars=1000;
extern bool UseAlert = true;
extern bool UseEmail = false;
// parameters
int i=0;
bool initDone=true;
int bar=0;
int prevbars=0;
int startpar=0;
int cs=0;
int prevcs=0;
string commodt="nonono";
int frame=0;
int bars=0;

int count = 0, thisbar = 0;
double now, prev;
bool flag;

//---- buffers
double FastWoodieCCI[];
double SlowWoodieCCI[];
double HistoWoodieCCI[];
double HistoRed[];
double HistoBlue[];
datetime dt;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- indicators
SetIndexStyle(0,DRAW_LINE,STYLE_SOLID);
SetIndexBuffer(0,FastWoodieCCI);
SetIndexStyle(1,DRAW_LINE,STYLE_SOLID);
SetIndexBuffer(1,SlowWoodieCCI);
SetIndexStyle(2,DRAW_HISTOGRAM,STYLE_SOLID);
SetIndexBuffer(2,HistoWoodieCCI);
SetIndexStyle(3,DRAW_HISTOGRAM,STYLE_SOLID);
SetIndexBuffer(3,HistoRed);
SetIndexStyle(4,DRAW_HISTOGRAM,STYLE_SOLID);
SetIndexBuffer(4,HistoBlue);
IndicatorShortName("Retracement Finder 1 ("+A_period+")");
//----
return(0);

}
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
int counted_bars=IndicatorCounted();

cs = A_period + B_period + num_bars; //checksum used to see if parameters have been changed

if ((cs==prevcs) && (commodt == Symbol()) &&
(frame == (Time[4] - Time[5])) &&
((Bars - prevbars) < 2))
startpar = Bars - prevbars;
else
startpar = -1; //params haven't changed only need to calculate new bar

commodt = Symbol();
frame= Time[4] - Time[5];
prevbars = Bars;
prevcs = cs;

if (startpar == 1 | startpar == 0)
bar = startpar;
else
initDone = true;

if (initDone) {
//FastWoodieCCI[num_bars-1]=0;
SlowWoodieCCI[num_bars-1]=0;
HistoWoodieCCI[num_bars-1]=0;
HistoBlue[num_bars-1]=0;
HistoRed[num_bars-1]=0;
bar=num_bars-2;
initDone=false;
}

for (i = bar; i >= 0; i--) {
//FastWoodieCCI[i]=iCCI(NULL,0,B_period,PRICE_TYPICAL,i);
//SlowWoodieCCI[i]=iCCI(NULL,0,A_period,PRICE_TYPICAL,i);

now = iCCI(NULL,0,A_period,PRICE_TYPICAL,i);

if ((prev >= 0 && now < 0) || (prev < 0 && now >= 0))
{ // change of sign detected


HistoWoodieCCI[i] = now;
HistoBlue[i] = EMPTY_VALUE;
HistoRed[i] = EMPTY_VALUE;
prev = now;

} else
{

// Colour it!
if (now > 0)
{
HistoBlue[i] = now;
HistoWoodieCCI[i] = EMPTY_VALUE;
}
if (now < 0)
{
HistoRed[i] = now;
HistoWoodieCCI[i] = EMPTY_VALUE;
}
prev = now;
}

}
if(dt==Time[0]) return(0);
dt = Time[0];
if(HistoWoodieCCI[1] != EMPTY_VALUE)
{
if(UseAlert) Alert("Retrace Found :"+Symbol() + " @: "+Period());
if(UseEmail) SendMail("Retrace Found","A Retrace was found with Symbol "+Symbol()+" at Timeframe "+Period());
}
return(0);
}

extern int nAlert=2;




for (int i=0; i<nAlert;i++)
{
if(UseAlert) Alert("Retrace Found :"+Symbol() + " @: "+Period());
}

have try it, but the sound of alert still only sound once while the warning "retrace found" print give 2 (nalert = 2)

why the warning show twice, but the sound only sound once ???

After replying I thought about it and realized that it wouldn't work quite as simply as I had suggested. MT4 has major problems when communicating with Windows for system services like popups, alerts and some chart drawing functions. Usually they get executed but when MT4 asks for too many some get dropped by Windows because it is busy handling something else. So you have to slow things down.

You will have to experiment as to how much delay is needed. I would try to do it once per tick or per 10 ticks. If you want to try another approach, try to sleep() for a second or two between alerts, but I much prefer the multiple tick approach.

wow, quiet complicated too....
btw thanks for your kindness

code, do you have MFI divergence indicator ??