Okay clear. Do you know any other good controller apps besides mconnect to stream from Foobar/MinimServer to the DirectStream over the network? fyi Plugplayer is also not reliable...
Creation 5 media player works on my iPad to control music from MinimServer on my NAS. Unlike mconnect, it remembers the library and renderer you used last time -- I get annoyed at having to reselect every time with the former.
I ended up buying a cheap Android tablet in order to use Bubble UPnP, which is definitely the best controller out of the many I have tried.