play audio after catching it

main.go

@@ -8,6 +8,7 @@ import (
 	"net/http/httputil"
 	"net/url"
 	"os"
+	"os/exec"
 	"strings"
 )
 
@@ -49,7 +50,12 @@ func (pr Proxy) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 				return err
 			}
 
-			os.WriteFile(strings.ReplaceAll(req.RequestURI, "/", "_")+".txt", body, 0666)
+			go func() {
+				mp3 := strings.ReplaceAll(req.RequestURI, "/", "_") + ".mp3"
+				os.WriteFile(mp3, body, 0666)
+				// on Mac: "sudo ln -s /usr/bin/open /usr/local/bin/play"
+				go exec.Command("play", mp3).Run()
+			}()
 
 			// pass on the original body into a new body 'cause the original one has been read out already.
 			resp.Body = io.NopCloser(bytes.NewReader(body))