Disklavier

What are your sources for finding solo floppy disks, jazz and classical plus Audio CD's for sale?  I have a Mark IV that came with a pre-programmed library that I have never added to but would like to.  [at reasonable cost]
       From: "daveproberts@... [disklavier]" <disklavier@yahoogroups.com>
 To: disklavier@yahoogroups.com 
 Sent: Monday, February 23, 2015 5:12 PM
 Subject: [disklavier] Re: Favorite Pianosoft Albums
   
    My favorites are the solo piano floppy disks by great jazz artists:
Chick Corea ClassicsTeddy WilsonA Teddy Wilson EncoreGeorge Shearing "Lullaby of Birdland"Billy Taylor "Healing Hands"Warren Bernhardt in ConcertDick Hyman "Blue Skies"Dick Hyman "Rainy Day Romance"Andy Laverne "In Walked Bud"Andy Laverne "By Name Only"A Steve Allen InterludeSteve Allen "The things My Heart Tells Me"Fred Hersch "Virtuoso"Roger Kellaway "Virtuoso"Gershwin Plays GershwinJelly Roll Morton "The Piano Rolls"Oliver Jones "O.J. in L.A."Jessica Williams "Sentimental Mood"Don Grusin "Old Friends and Relatives"David Benoit "Seattle Morning"Windham Hill SamplerAlso anything by solo classical pianists (too numerous to mention)
But often just as good, if not better, are many of the jazz and classical Plus Audio CDs:Bob Florence QuartetThe Magic of the ViolaAlan Pasqua "Seasons"Soprano AriasCeleste Tavera in RecitalA Sondheim CollectionSonatas for CelloFaure, Poulenc and Prokofieff "Music for Flute and Piano"The Heifetz Encore TrranscriptionsJoey DeFrancesco ConcertThe Ayke Agus TrioSonatas for ViolinPeter Nero "Live"Dichterliebe Op.48Brent Mills "One Step at a Time"Alan Pasqua "Latin Jazz"EnchanteEdith Piaf "A Tribute!"Dave KozFree Flight 2001Ross Tompkins Trio "I Remember You"Bob Florence "For the Ladies"Shelly Berg "Hot it Up"Mike Garson Trio "You Are My Love"Joyce Valentine and Debbie Brooks "Reunion"Ray Templin and Ken Treseder "Get Out of Town"Shubert "Trout Quintet"John Novello Quartet "Always and Forever"Best Loved Arias
As others have noted, much more hit and miss are the floppies using the built-in synth sounds. The best feature small jazz groups like the Mike Garson Trio's "Nice and Easy Vol. 1.
The worst (by far) is the Grieg Piano Concerto in A Minor, which has an unlistenable faux-orchestra accompaniment to otherwise worthwhile piano performance by Bryan Pezzone. I'm also not a fan of the Smart disks that superimpose piano noodling on a commercial CD that often is distracting and detracting.
I do think the list price for all of these disks is way out of line. I have been fortunate to find many of them at a discount. It's a shame that many are no longer available. And an even bigger shame that there aren't more disks being recorded by name artists.