Sound not working?

[martin-henz]

https://share.sourceacademy.org/jhd28

(import "sound" 
    (play make_sound))
(define π 3.141592653589793)
(play 
 (make_sound (lambda (t) (sin (* 2 π t 440))) 1))

currently gives

Line 6: Error: play is expecting sound, but encountered t => t >= duration ? 0 : wave(t),1

[s-kybound]

I suspect this stems from the differing number representations of scm-slang and SA. will work on a way to reconcile this issue!