Why won't Warner Records CDs load on IMac???

[rock2roll]

Warner, Reprise, and other Warner label CDs won't load at all on iMac, it's maddening. Had to have wife load them on work pc to import to itunes, burn a disc and that disc did load so I could import to mac itunes. Why why why??
Sony/BMG and other labels load okay.
if you know, also write me at rock2roll2@aol.com - thanks!

 

[iHerzeleid]

By load do you mean it won't mount on your desktop or that iTunes won't let you import it?

 

[rock2roll]

disc won't load/mount, gets popped out

Warner Label Group discs only for the most part, including a lot of Rhino Jazz from 90s. Is it the way they were presses/made? I was able to load them on pc at wife's work, burn to cd-r and then load those at home; but I can't do that with everything.