My $20 to the person who can write this simple script for Fission

Question

Here is what I need to automate. I don't care if it's an Apple Script, or an Automator work flow - whatever - just so it will work with my present setup. Once I test it and it works, I'll send $20 to the first person who can help me.
Script needs to apply to each (and every) MP3 file in a selected folder:
Open the first file with Fission v1.6.6 (from: www.rogueamoeba.com)
Select all
Normalize
Save audio (in same folder)
A warning dialog pops up: "File already exists..." -- answer with "Replace"
Close file
Repeat for next file in the folder, until every file has been Normalized
End script when the last file in folder has been Normalized
I don't mind finding the folder (which will be in my iTunes Library), and then starting the set of actions on the folder but I definitely don't want to be required to take any additional action on each and every file.
I'm presently running Fission v1.6.6 under MacOS 10.4.11 on a PPC desktop, so it needs to work in that environment.
Note that the latest version of Fission requires MacOS 10.5 - I can't use any script that requires that version. Rogue Amoeba's Legacy software page (http://www.rogueamoeba.com/legacy/) shows Fission v1.6.8 as working with 10.4, but that contradicts the Version History for Fission which shows 1.6.6 as the last one for 10.4 - still investigating.

Answer 1

Pierre L.
Thanks for the effort!
First, I can clarify this: Rogue Amoeba confirms that I can use the version 1.6.8 of Fission located on their Legacy page with my OS version 10.4.11, so I've upgraded from 1.6.6 to 1.6.8. Seems to be working OK.
Next, let me apologize for being mostly ignorant about all things AppleScript. I'm really in over my head, here, because I've not used the ScriptEditor for more than a few minutes before today.
What I've done so far:
I checked the box in the Universal Access preferences pane to enable access for assistive devices.
I copied your script from this forum and pasted it into Script Editor.
I've Compiled your script, then "Saved As" an "Application" on my Desktop.
When I double click the icon for the saved script (which ends in xyz.app), a navigation window appears, which I used to select a test folder on my desktop.
When I Choose the test folder, Fission launched, and selected the whole file, as expected. Then I get an error:
"NSReceiverEvaluationScriptError: 4" - with buttons to "Edit" or "OK"
Thinking it might be a timing error, I edited the delays:
set theFolder to choose folder
tell application "Fission" to activate
tell application "Finder"
set theApp to POSIX path of (get file of process "Fission")
set theFiles to document files of theFolder
repeat with thisFile in theFiles
open thisFile using POSIX file theApp
tell application "System Events" to tell process "Fission"
delay 18 -- adjust if necessary
keystroke "a" using command down -- Select All
delay 2 -- adjust if necessary
click menu item "Normalize Selection" of menu 1 of menu bar item 7 of menu bar 1
delay 4 -- adjust if necessary
keystroke "s" using {shift down, command down} -- Save Audio…
delay 3 -- adjust if necessary
keystroke return -- Save
delay 2 -- adjust if necessary
click button "Replace" of sheet 1 of window "Save Audio"
end tell
end repeat
end tell
tell application "Fission" to quit -- optional
... Compiled, and Saved again.
Now, the script runs up to the point where it should answer the Save pop-up window: "File already exists..." with the keystroke to "Replace" - but the script stops there, with the same error: "NSReceiverEvaluationScriptError: 4"
Bottom line: so far, I've been able to get the first mp3 file in my test folder Normalized, but not Saved. Any suggestions?