Hi
exe file? what is the exe file you want to play? Is it executive labview filw or another non-labview exe file like Window media player?
In case of labview, use "snd play wave file.vi" to play wav files. find it in graphics and sound folder in the function palette.
In case of your program exe to play sound, use "system exec.vi" to open the program you want to play the sound file.
Clement