(GETVAL('PlayAndWait','filepath'))
Example:
SET VAR vPlay = (GETVAL('PlayAndWait','c:\windows\media\tada.wav'))
Will play sound/wave file and waits for the sound to finish before continue to a next command. This could be a long time if the sound file is long. You would want this if, for instance, you're writing an answering machine aplication in R:BASE for Windows.