RaVaG3r do a !playsound bang to a file like wav or another mp3.
I am curious if this an Xlabel issue.
One other thing you can try...
The Bang's in the script.rc are not quoted Ex: "quoted"
!PlaySound $SoundDir$sound_in.mp3
Search the Script.rc for !Playsound and quote them!
Ex:
!PlaySound "$SoundDir$sound_in.mp3"
I am not sure why I didn't do that anyway it breaks my principle rule of qouting variables.
Your machine must be picky to not having "" on vars.
That's the last thing I can think of for you...