video, midi outstream routes

- VMR bug: video outstream route is write-only; test commented
- midi outstream route test was improperly int; moved to string

prelim tests for potato pass

README.md

@@ -515,6 +515,8 @@ The following video Vban.outstream[9] properties are available:
 - vcursor: bool
 - route: int, from 0 to 4
 
+Route is currently write-only. This is a VMR bug.
+
 for example:
 
 ```powershell