Frequency Tester in Python 2.7.3

I made one of these to play around with, I decided to put it up here. Its an extremely simple program, but will provide a few minutes of entertainment..

So yea, if you really want it, here's the code.

Code:

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import winsound


def welcome():
    print("Wecome to Freq-Tester!")
    setop()


def setop():
    what = int(input("\nWhat frequency would you like to hear: "))
    time = int(input("How long would you like it to last in seconds: "))
    if what <= 36 or what > 32767:
        print("Frequency must be between 37 and 32767")
        setop()
    if what == "credits" or time == "credits":
        print("Program made by Jordan Ludgate!")
        print("In Python 2.7.3!")
        setop()
    else:
        finaltime = time * 1000
        Freq = what
        Dur = finaltime
        winsound.Beep(Freq,Dur)
        setop()


welcome()

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K cool, pc.

Thanks for sharing, loled at the app :P, by the way there's an exception ValueError when trying to go to "credits"