Certain tracks in my iTunes playlist won't play in DJay Pro on my iMac , I get iOS error msg

After creating a playlist in iTunes and then opening it in DJay Pro on my iMac all playlists songs are visible however some won’t open in DJay . It just gives me some iOS error number . You can’t tell which songs will and which won’t open till you’re mixing. I don’t use Apple Music, I just purchase from iTunes or download then use platinum note and mixed in key , then import into my iTunes library, create a playlist then open DJay and I get iOS errors on random songs. This needs to be fixed somehow because it renders DJay Pro useless. This just started about a couple months ago. Any help or work around would be greatly appreciated. I love the app but can’t wonder if each track will play or not. I do all my mixing on my iMac, No external devices. Can you guys maybe suggest a music management program other than iTunes for how I mix. I’m pretty sure the problem is with either iTunes or the iOS sierra, because if I leave DJay and restart my computer, delete the affected songs from my playlist in iTunes then reload them, they will sometimes work in DJPro. But this is way too unpredictable and labor intensive each time I want to mix. Your help is much needed

Hi Greg,

we are sorry to hear that. Can you send us an exemplary song via support@algoriddim.com?

Thank you in advance.

Cheers,Lukas E.