keyword -> Launch Apps / Files (with my selected files) -> Run Script
where the script is Language: /usr/bin/osascript
and the script is as follows:
tell application "Moom"
arrange windows according to snapshot named "MyLayout"
end tell
This assumes you've set up a Window Layout Snapshot in Moom called "MyLayout" & which is appropriate for the selected files.
I've set up custom snapshots on all three of my machines for the optimal workspace layout based on screen size. Since Moom prefs. are local to each machine (and hence customized based on screen size) but Alfred prefs. are synced in Dropbox, this works great. I can use the same keyword on each machine, and get appropriate results.