If you check the "Scripted" option in the animation panel, you get access to the property Object.CurrentFrame.

You can then create a loop in your script and check for frame number 56

For i = 0 To 145
  Object.CurrentFrame = i

  If i = 56 Then
     'play your sound here
  End If
Next

and how can I call States ?? example...
State1 = animation 0-55
State2 = animation 56-70 ----> this is the animation with the sound
State3 = animation 70-145
And then "Mouse up" = a little loop animation of 17 frames

Is this posible ??

thankx for your help guys, but it does not works =S I'm new on this kind of code

Hi BigDogBigFeet...I dont know how make it in only one animation, is because I'm trying to make 3 states for it, the animation is a little mouse who suposes is walking ---> State1, and then he stops and says Hi moving his hand --->State2 on the state3 only moves his head at the left and do nothing,
It suposes to show and hide a little window with some link buttons, they will open some flash games as a targets, they are located in a folder, they already done.....and the State "4" is a "mouse up" state is a loop animation whit 17 frames, and this is the last animation for the mouse is only moving his legs and head.

I was thinking in make the animations as calling states at the end of the animations, but I dont know how, I was thinking in the events CuerrentFrame, something like this :

"for the animation1":

If object.CurrentFrame = 55 Then
desktopx.object("mouse").State = "Estado1"
function OnState1()
End If

"for the animation2":

Function OnState1
If object.CurrentFrame = 70 Then
desktopx.object("mouse").State = "Estado2"
function OnState2()
End If
End Function

"and this for animation3":

Function OnState2
desktopx.object("mouse").State = "Estado3"
End Function

I dont know how can I make the codes in DesktopX =S hope you can give me a hand

I'd agree with Littleboy, use scripted animation, with all the frames in one state - this will result in a smoother animation than if the frames are split between multiple states (desktopx clears unused images from memory, including images in object states that haven't been used for a while).

Instead of a For...Next loop, you should use a timer to control the animation, so you can define the time between frames and allow the object to remain responsive whilst animating.

To play a sound at frame 56, you can have a second (hidden) object which contains your sound. Give this object 2 states - the first state contains no sound (otherwise it will play the sound when dx loads), the 2nd state contains your sound effect. When your animation hits frame 56 then call

desktopx.object("soundeffects").State = "playsound"

For details of timers, scripted animation and other desktopx scripting information check out the desktopX scripting reference: https://www.stardock.com/products/desktopx/help/dev_guide_3b_script_reference.htm