Found this Sound Engine package, but not much tutorial. Wonder if there are more tutorial? https://docs.racket-lang.org/rsound/index.html\|https://docs.racket-lang.org/rsound/index.html

how can I pipe a string to process and return a string from that process, I’m getting lost in open-input output /string/ textual etc… etc.

(lambda (a-string) (open-input-string a-string)

that gets me the string as a port

but Im not sure how to buffer the lines after that, and flush them as I pipe them to the process