Ah, I see. As far as I know, there is not an "easy" (read: without some coding) way to do that at the moment.
I'm not sure what your background is, but since your dataset is quite big, I'd recommend looking into bigdataviewer for display (and imglib2 which is its backend).
I think this thread, and this post in particular:
which talks about loading many sub images into a single
CellImg which is basically what you want to do.
If you are willing to resave your data into a different format (such as hdf5 - see the link above) then opening and browsing with bigdataviewer will be quite easy. If you need to keep your current file organization, then it will probably be necessary to do some coding.
A big info dump, I know, but hope its helpful...