# Sound user defined functions Reference

Below is a complete list of the user defined functions available in AutoIt. Click on a user defined function name for a detailed description.

When using them you need to add a #include <Sound.au3>.

User Defined Function | Description
--- | ---
_SoundClose | Closes a sound previously opened with _SoundOpen
_SoundLength | Returns the length of the soundfile
_SoundOpen | Opens a sound file for use with other _Sound functions
_SoundPause | Pause a playing sound
_SoundPlay | Play a sound file
_SoundPos | Returns the current position of the sound
_SoundResume | Resume a paused sound
_SoundSeek | Seeks the sound to the specified position
_SoundStatus | Returns the status of the sound
_SoundStop | Stop a playing sound