Plays a sequence of tones on the PC speaker.
soundlist input must be a list of pairs.
Each pair specifies a frequency (in hertz) and duration (clock ticks).
The larger the frequency the higher the pitch.
The larger the duration the longer the sound plays for.
FMSLogo is unresponsive to user control while it plays a sound vector.
SOUND [1000 200]
MAKE "zing  REPEAT 50 [MAKE "zing LPUT REPCOUNT*10 :zing MAKE "zing LPUT 100 :zing] SOUND :zing