yea! those remotes were definitely handy back in the day when you would be out and about with it, but i mostly just use it at home these days so i dont have the remote attached.
webmd.pro is what i use. it runs in any chrome browser. its a bit on the slow side but i cant remember at this point whether it was always slow to burn to these disks.
but as long as the minidisc player has “netMD” on the front it should work with that. the only other thing you have to do if youre on windows is install this driver
theres also ElectronWMD which is basically just webmd.pro packaged into a desktop app. that may or may not have the driver included, i havnt tried it yet
this guy is using a transmitter with his minidisc, im sure any transmitter you could find would work
seems like kind of a chore having to charge 3 separate things though. if someone would just do a kickstarter for a new minidisc player that had bluetooth built in and usb-c to power it i would buy one in an instant!
the minidisc i have now uses mini usb to transfer data and then has a weird 3v charging port, and the cable for that doesnt work anymore so im just stuck with using AA batteries to power it now. its a bit of a mess. these days it would be just a single usb-c port that would handle all that
good luck with your minidisk journey anyway if you head down that road haha