Load error. The file couldn´t be found RB v5.4.3

Is the music you have in iTunes actually locally-stored music or is it from Apple Music?

Hi.

The music it´s mine (I don´t have Apple Music account) 

Okay, so when you "imported" the music from iTunes to rekordbox, what was the process you used?

Hello

Thanks for respond

I select and move all my music to a folder "add automatically to iTunes" next go to iTunes interface, select option in preferences called "share xml. file to apps¨  I go to rekordbox and go to te Itunes folder, I push the refresh botton beside and that´s all...I have 486 tracks and half of them aprox cant be analyzed, I´ve already checked the parameters and metadata files to discart posible conflicts of characters, those are the same that the another ones that can be analised . The processor it´s a 2.4 GHz Intel Core 2 Duo on a Mac Book from 2010. 4GB Ram  Im still trying another ways, one of them was move all my music in a new Itunes playlist, at first it was working, the tracks were analisying by the software, I was away for a while and left it work but when im got back I realized that the same icon ( ! ) stills appear again and the analysis stopped. 

Did you possibly still have iTunes open when you were trying this? You need to have iTunes closed for about a minute before attempting to refresh the rekordbox listing.

I'll point out that your computer doesn't meet the minimum system requirements for rekordbox dj, so while it may run, the performance may suffer. You should still be able to use it in EXPORT mode to manage your music.