ps : it is not needed to modify anything related to the album "2008 - Where Myth Fades To Legend (Japanese Edition)", I found out how to correct the sound issue on my own.
I simply used foobar2000 to convert the files in flac to check if it would recreate the very same files, keeping the quality of course, with the standart audio sound level and indeed it worked. You can restore the normal audio sound level by doing that and it is the same as my mp3 version of the album so there is no mistake about it. Perfect. Hopefully it is possible to convert Flac into Flac without losing any quality, otherwise I would have gone mad ah ah.
To avoid to have created these messages for nothing, let's say something usefull : I think that these links are dead.
2007 - Apology (Acoustic) - Single
2009 - What Goes Around (Justin Timberlake Cover) - Single
2016 - The Annabel Trilogy Part III: Confession
2018 - The Lost Chapters - EP
If you can reupload them it would be really kind of you for the ones would want to get them here!
Thank you very much for your share!
Greetings.