Batch rename specific song titles in iTunes

Question

Hi,
I'm thinking about writing a program that will go through my iTunes library to (1) find all songs with a specific characteristic and then (2) append a prefix to those song titles.
For instance, I have a bunch of tracks with general title:
     artist_album_version_track_123456
and I would like to append a single string to each track title, so I get something like:
     MyString_artist_album_version_track_123456.
In other words, one track title may be something like : Coldplay_Yellow_Parachutes_349203. So, there are three strings (with underscores), followed by a six digit integer.
I would like to append something to the beginning of all the tracks that end in a six digit integer. So, in the last example, the program would take that title and change it to something like:
     Zweit234_Coldplay_Yellow_Parachutes_349203
In particular, I only want to append one string to the beginning of the track title, so the string DOES NOT change with the track title. In the above case, all track titles would have Zweit234_ appended to them.
The reason I need to automate this task is because I have about 80,000+ tracks to rename.
Ideally, I can create an executable script that the user runs and the entire process is completed, without any additional user interaction.
I'm looking into ways to interact with iTunes data using AppleScript and Java, but I was hoping someone might have some ideas or, at least, be able to point me in the right direction.
Any help would really be appreciated.
Thanks!

Answer 1

Hi red_menace,
Your last post really helped and I was hoping you could help with another question I have. I used your script to output the data to a text file and then wrote something in java to sort the items I wanted. So now I have a text file with all the tracks that I would like to change that looks like:
Track1
Track2
Track3
Track4
Track5
etc...
Now, I wrote an AppleScript that will append something to the prefix of my song name, but I'm not sure how to run through the names that I have in the text file. I've tried changing the text file into a list and then saying something like:
set listOfTracks to {}
set Tracks to paragraphs of (read POSIX file "filepath")
repeat with nextLine in Tracks
          if length of nextLine is greater than 0 then
                    copy nextLine to end of listOfTracks
          end if
end repeat
tell application "iTunes"
          set sel to listOfTracks
-- Rest of Code --
end tell
My script actually doesn't pop up any errors, but it also doesn't work. I've tried looking into finding the location of each of the tracks and then making a playlist with those tracks, and then just changing everything in the playlist, but that hasn't really gone that well either.
So, my question is: How can I create a playlist in AppleScript using the tracks listed in a text file?
My attempts so far have really fallen flat.
I would really appreciate your help!