Applescript to check for the existence of a file I record radio programs during the night and then run an applescript to rename the files.  I have the script working unless there is no file named that I am attempting to call and rename.  Here is my code that is working:

set Yesterday to (current date) - (24 * 60 * 60)
set myYesterday to (date string of Yesterday)
set y to year of date myYesterday
set m to month of date myYesterday
set d to day of date myYesterday

set newMyYesterday to m &amp; " " &amp; d &amp; ", " &amp; y as text

set newHourOne to "Recording1 - " &amp; newMyYesterday &amp; " - Hour 1.mp3"
set theFile to (POSIX file "/Users/Administrator/Recordings/Recording1.mp3") as alias

tell application "Finder"
    set the name of file theFile to newHourOne
end tell

set newHourTwo to "Recording2 - " &amp; newMyYesterday &amp; " - Hour 2.mp3"
set theFile to (POSIX file "/Users/Administrator/Recordings/Recording2.mp3") as alias

tell application "Finder"
    set the name of file theFile to newHourTwo
end tell


Can someone please show me how to check to see if the individual file ("Recording1.mp3" or "Recording2.mp3") exist before trying to rename the individual file?  Thanks!!
This should work:

if exists file theFile then
    # do stuff
else
    display dialog "File not found" buttons {"OK"} default button 1
end if