Even not explicitly reported I believe you are using Tutor for Windows.
The PLAY command has the following format:
PLAY("filename.wav",VARINT)
where:
"filename.wav" it's the filename
VARINT is an integer variable (Important: must be a Declared variable don't use the numeric values directly in the call) whose values can be
0: the part program stops plays the file and restarts at the end of the sound
1: the part program plays the file without stopping
2: if the file does not exist this command Switch off all sounds
9: the file is played Continuously up to the next PLAY instruction or the the PLAY OFF one.
I hope that helps you. Anyhow you can find all the information you need in programming Tutor for Windows in the "Tutor for Windows Programming Manual" order code M1U040ED
Roberto Maiocco