I assume that just using the Web UI or Brennan app on a phone/tablet to see what is playing is not a good solution for you ?
I did write the text below in response to a similar question a while back but again it may not be a good option for you ?
If you have a smart TV or, a TV/Monitor with a smart tv box connected, and are able to to run a browser app on the TV then you can display the Web GUI there whilst controlling the B2 in another way i.e. front panel, remote, or even on a hand held device such as your phone using the Web UI or Brennan app.
Its not perfect but it does give you at least some sort of bigger display if that's what you are looking for.
I found that the full original Web UI does not refresh the search panel , playlists , or the artist and album lists on the right but when you change track the what's playing window is refreshed.
For this reason I think the best option is to choose the mobile Web UI option for display on a TV.
I took a picture of my TV but the quality is not great because of ambient reflections.
My test was using the 'Silk' Browser on my Amazon Fire TV box which is connected to my TV.
Fire TV has a crude mouse emulation using its remote which works but can be tedious.
Its not something I will use as my B2 is in a different room to my TV.