GNEDBY RIP

A bit more expensive, I believe, but I have three Wood Shed dowel units (they make other types as well) that are nicely made, look similar to the units you mention and have served me well.  Come in many sizes.  Got mine from Wayfair almost 7 years ago, but I believe they're still made.

I just installed a 12 cubby "Kallax" unit from Ikea. I did some math and determined it can hold 768 CDs using only one side (freestanding, it can theoretically hold twice that (1536) but weight would be an issue). Each cubby can hold about 64 discs comfortably (bottom row: 32 standard redbook CDs in cases. Top row: 32 same. Rows are separated by thin sturdy planks (of whatever -wood? plastic?). Each cubby is rated for (I believe) 29 pounds. Total CD weight is about 16 pounds (4 oz ea.). Since the storage unit most likely will be against a wall, only half of its capacity would be readily accessible. My cabinet cost around $90. The Kallax line has other capacities (3, 6, 8, 12 cubby holes).
 Who would have thought storing CDs would be such a hassle especially compared to LPs?
  

John Darko has introduced a new way to categorize audio gear, whether it is "Kallax-Fi" compatible, equipment that will fit into IKEA's Kallax shelving.
https://darko.audio/2014/04/ikea-announce-expedit-successor-in-kallax/

Goethe, My solution to the problem was a Mac Mini a 6 TB hard drive, and Channel D's Pure Music program (it up samples everything)
Then I took all those CDs and traded them in for store credit with which I bought a bunch of new records. My wife was thrilled.

dweller and sfar - thanks for your thoughts on Kallax.  I'm very pleased with the Kallax unit for my LPs - it's what led me to looking at other Ikea products for my CDs.

Given his post several years ago about the Kallex replacing an older product, maybe John Darko can sniff out Ikea's plans to replace GNEDBY...