Drop in tray by lorentzdesign.com.

I have multiple pieces...a component cabinet on top of a CD4, which is on a caster base. I also have a second component cabinet with a CD3 next to each other, with a double wide top and double wide caster base. it fits my 40" Flat screen perfect. Bit expensive to ship, but WELL worth it. The older cubes I have are about 5 years old and look BRAND NEW. Will use again if I ever have the need.

I purchased a cabinet from this company over a year ago to house my cassette collection. There hasn't been one day gone by since that I have regretted it.  It is a masterpiece of workmanship and durability. My wife and I are comtemplating a wide screen TV and I wouldn't consider buying the stand anywhere else when the time comes.

@confranfan I couldn't agree more. One of my cubes are nearing 10 years in almost daily service and are as good as the day I bought them. Many of my CDs are in plastic "Jewelbox Be Gone" sleeves, which allows me to put a lot more CDs in the cabinet. It handles the extra weight just fine.