Cleanup of vibe code and replacement by self coded audio manager.

private/file-walker.rkt

@@ -8,7 +8,7 @@
 
 (provide make-file-walker
          make-file-admin
-         fw-add-filter
+         fw-add-step
          os-path
          )
 
@@ -138,11 +138,11 @@
       f))
   )
 
-(define (fw-add-filter fw filter-func)
+(define (fw-add-step fw step-func)
   (λ ()
     (let-values (((base-path path info) (fw)))
       (if (eq? info #f)
           (values #f #f #f)
-          (filter-func base-path path info))))
+          (step-func base-path path info))))
   )