Yes it works. I just tested it with with demo files from August 2000 (Music Maker 6). But there are some Dlls missing, so sound effects (Echo, Distortion, Delay etc.) will be ignored. If your file used a lot of effects it will sound different. Of course you need all the sample wave files, not just the mmm-file.
In Music Maker 5 the file format was called "VIP", so I guess your mmm-file is not from 1997 but from 2000 or later.
I would upload the file but the site's scripting intervenes and balks at the file format and refuses to upload. These are a handful of video clips that came with "Microsoft Bookshelf 98", a sort of dictionary and pedia. Modified date is May '97. The folder has some .WAVs but I cannot ascertain if they are part of any package. Anyway, I claim M/M also balks at the format on my upstairs W10 PC with the latest version: double-clicking the old .mmm file launches M/M which then does absolutely nothing and indicates nothing. Doing a Load Project on the file results in a fatal error, "unable to". Thanks
I see your problem. The MMM-file format from Microsoft Bookshelf 98 is not the same as the MMM-file format of Music Maker. Just because both have the same name doesn't mean they are the same internally.
If you want to watch the videos on a modern computer maybe try installing a copy of Windows 98 in a virtual machine like VirtualBox.
You can only upload image and video files in a post on the forum.
If you want to give other members of the forum access to your files for testing then upload them to a file sharing site, such as Dropbox, and provide a link to the in a post.