In the Admin section for MyAlbum (version 2.87), there is an entry to allow the number of photos per page:

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Displayed Photos per Page

Input selectable numbers separated with '|'
eg) 10|20|50|100
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Yet, I dont see the drop down list for the user to select how many to show per page. Currently it looks like it is defaulting to 10. I dont recall having this problem before upgrading to 2.87.

Thoughts?

The select box exists just under admin section.
(You can see it in Photo Manager)

You can add links or form for 'num' into the template.

eg)
http://www.peak.ne.jp/xoops/md/myalbum/viewcat.php?cid=1&num=3

watch num=3

OK, so this is for the Admin page ONLY? I'd like to set the # of photos 'per page' for my users in the MyAlbum module. I can set the # of columns, but # of photos.

Is that possible?

for public side (front-end):
just add form(select box) or link with 'num'.

OK, I can set up a combo box. How do I get the data from the Admin panel tht represents the values in the combo box?

Why do you have to use data from preferences?
Just edit the template as you like.