I've browsed the postings and know that there is a beta version of Viewer 2.5, which supports pause. Is this only available as a download from the message board, or can it be got at by members of the public (e.g. my music society) from the main Noteworthy web site?
Viewer 2.1 can be downloaded from: http://www.noteworthysoftware.com/nwc2/viewer.htm
Viewer 2.5 Beta can be downloaded from: https://forum.noteworthycomposer.com/?topic=7439.0
Neither requires a login. Your question implies a distinction without a difference. Both can be "got at by members of the public."
Thanks for the answer. I was aware of the copy on the forum - it's just that it's not shown in a way most of the members of my society would recognise as a download. I was hoping there would be a "Beta versions" page on the noteworthysoftware web site, but it seems there isn't, from what you say.
Program beta versions generally stay in the forum domain. The current beta Viewer was announced to a wider online audience. It also is stable enough for a wider release, which should happen soon.