Sony MD Clip Editor - The white whale. Released with the rare MDS-DL1. Possibly found on 1-2 Sony Vaio computers.

The first verion only supported reading MDClip, it could not write. Fairly soon after launch Sony offered V2 that allowed both reading and writing MDClip art. The user had to send in a registration card and request it. The purple disc is V1.x and the Blue disc is V2.x. Archive.org has the purple (v1.0J) disc here So the Blue disc should be the version that can both read and write MDClip info.

This page lists "compatible" pc's… maaaybe some of them came with the software?

Some links discussing it with some screenshots and info:

https://www.minidisc.org/part_Sony_MDS-DL1.html
https://www.sony.com/en/SonyInfo/News/Press_Archive/199903/99-036A/
https://web.archive.org/web/20020622071008/https://www.sony.co.jp/en/SonyInfo/News/Press/199903/99-036B/
https://web.archive.org/web/20000312124856/http://www.watch.impress.co.jp/pc/docs/article/990325/sony.htm