Wish File Finder was an example. It works 100% with tosec dat files. You have a collection from pd series and you have not an idea what missing? Wish List File finder can help you to find what are you missing.
Why use amp not the tosec dat in a special version? AMP create the dat (or whatever) from the mod in the database. The mod is the guarantee that this file is 100% the original. A user download this dat and load it in clrmamepro and scan the archive. All the mods in the dat if found be moved to the other directory and the last mods are not in the database from amp.
I think tosec and clrmamepro are well-known
Yes is a hard work but you have manny time saving with clrmamepro. All mods on the ftp you can scan and all what are founding you can delete and the rest is not in the database.
Here is the music.dat from tosec.http://symmo.net/tosec/TOSEC%20Music%20(2004-12-06).zip