I’ve been using
FreeShow at our Chapel in conjunction with iSing as we don’t have any musicians to play hymns. It’s a system that worked well, project in FreeShow (readings and slides), CMD Tab (or window click) to iSing for a hymn and then CMD Tab (window click) back to FreeShow.
A couple of months ago we were notified iSing would cease and was being replaced by
Worship Player. I downloaded the trial version and found out CMD Tab didn’t work (iSing apparently displayed in a full size window). An email to the devs came back with some workarounds and I found out a ‘triple click’ in FreeShow also worked.
Come forward 2 weeks and the Worship Player dev had written some code into Worship Player and it now worked with CMD Tab and FreeShow!
Our service on Sunday now worked perfectly between FreeShow and Worship Player, so if you’ve found this from a Google search your problems should be solved.