Switch is an excellent converting software, as are all the programs from NCH I have used. You can buy a long term license for very fair fees.
https://www.nchsoftware.com/index.html
VLC media player will play any file type, AFAIK. https://en.vlc.de/vlc_download.php
Two new leader discographies I have finished:
Ronald Muldrow: (Leader dates) https://jazzdiscography.com/Leaders/muldrowdisco.php
Al McKibbon: (Leader dates) https://jazzdiscography.com/Leaders/mckibbon.php
That's a very good, underrated album. Considering the great vocalists Shearing recorded with during his Capitol years, Nat King Cole, Peggy Lee, Nancy Wilson, this really holds his own.
Track list here: https://raycharlesstore.com/pages/track-listings
So are these complete albums plus singles and other bonus tracks?
Well, this review by Joe Marchese tells me it's just a selection of album tracks. https://theseconddisc.com/2021/06/18/do-i-ever-cross-your-mind-ray-charles-post-atlantic-recordings-explored-on-true-genius-box-set/