Are those DRM'd tracks?
Have you imported them to the rekordbox collection or are you browsing the iTunes part of the tree within rekordbox?

I have just purchased a compilation via iTunes on my phone and attempted to access them through rekordbox to play on my xdj-rx.
All tracks on the album are showing a no entry sign and when I attempt to import rekordbox tells me to check my log file?.
This has happened before and I havnt solved the proble but after just purchasing an album and it not working I want to get to the bottom of it.
Any help appreciated?
Regards
Tom
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Are those DRM'd tracks?
Have you imported them to the rekordbox collection or are you browsing the iTunes part of the tree within rekordbox?
Think I've sussed it mate.....purchased on my phone for some ridiculous reason it isn't downloaded to my desktop, which is why it wouldn't show in Rbox
Thanks for responding tho brother
Bloody iTunes
Regards
Tom
Hi am Having the same Issue,
Can I Please know why this is happening? I Moved from Serato to RekordBox and I can't figure out the issue.
The same tracks seem to be working on Serato?
What am I doing wrong Need help asap!

Are they possibly iTunes Music songs? Anything from their MUSIC service is not "purchased" -- you can only play songs you have legitimately purchased from the iTunes store which do not have DRM.
Hi Yes,
Their legally purchased. I thonk I found the issue, They were still cloud based and once i physically downloaded it on itunes it now works, what confused me was how serato picked it up regardless.. either way I think its good now thanks.
"Well there's your problem!" ;)
Glad you got it sorted.
I'm having this problem too. All my iTunes iCloud purchases, which haven't been downloaded onto my computer, still show up in Rekordbox under the iTunes tab with the no entry sign. How do I delete them? None of them are tunes I want to download.
You would have to delete them within iTunes.
That fixed it, thanks! None of these tunes were displaying in iTunes, which is what threw me off. I had to set iTunes to display cloud purchases, delete them, then switch off displaying cloud purchases. Then they disappeared from Rekordbox.