Colin's page on A/V resources. Be aware this sort of software changes from year to year.
An "A/V" presentation is basically a slideshow with a sound track- either music or commentary. It may include video clips, or the whole thing can be a video movie.
In the past , two slide projectors were used, synchronised with a tape deck.
This was easy if you had six arms. These days, it's even simpler.
Several computer applications can produce the slideshow type of presentation. It can be done using Powerpoint , or the "Openoffice" free equivalent, "Impress". In both cases a sound file is just dragged into the slideshow.
The previously recommended purpose-built application for creating AV slideshows on a PC was Proshow Gold, but this is no longer being supported. There are other alternatives listed below, but the simple and cheap (free) alternative for PCs is Microsoft Photos (which is probably already on your PC as part of Windows 10 or 11).
Download a very short video showing how to get it nearly right. (Hint-Watch where I put the end page. Note- this is a 24MB file which may take a couple of minutes to download, depending how fast your Internet access is.)
There are plenty of articles on the Web on how to use MS Photos to make an audio-visual presentation. See, for example:
https://www.windowscentral.com/how-start-using-photos-video-editor-windows-10
For advice on creating your own audio-visual presentations try some of the following:
https://www.thenorthernavgroup.co.uk/_files/ugd/8dcc7d_f22c12333e8d42efa2710d34bedd15fb.pdf?index=true
https://www.shillingtoncc.org.uk/uploads/1/1/9/6/119629677/audio_visuals_or_slideshows.pdf
Suggested software:
For PC:
PTE AV Studio 10 (which used to be called Pictures-to-Exe) ($75 - $149 for Pro version)
ProShow Gold is no longer supported and has been replace by Photopia ($100 per year)
Microsoft Photos – (Free - bundled with Windows 10)
Powerpoint
For Mac try:
FotoMagico (for Mac - £74/yr)
Final Cut Pro ($500)
Photostage Slideshow Software (£23 - 30)
iDVD (Free - bundled with your Mac)
For editing sound tracks (Mac and PC):
Audacity – (Free)