How do I retrieve my music files from I phone rekordbox 2.4.0.6

I have copies of rekordbox 6 on both my Iphone 12 promax and my laptop.

I still have rekordbox 5.something on my tower.

I also have rekordbox 2.4.0.6 on my Iphone 12 promax.

My music files on rekordbox 2.4.0.6 I would like to retrieve them from my Ipnone for the purpose of replacing missing files on rekordbox 6 which I can no longer relocate.

How can I do this?