If you're looking for an app that does everything Monstune is supposed to do, I'm afraid that this GOTD is a pass. It should work to copy some discs to your hard drive, but I'm far from confident that it will handle every kind of DRM out there. I was hoping that copying a title, e.g. the movie on a Blu-ray would work, but if the movie's made up of several .m2ts video files that need to be played in a particular sequence, which is pretty common, it'll only copy the 1st video file, and then to a MKV, despite choosing Title Copy rather than MKV in the settings. Assuming that Monstune gets the DRM right to copy the complete Blu-ray disc to your hard drive, it is possible to copy just the main title to another folder using tsMuxeR, with the important benefit that multiple video files will be put together into one file that can be handled by players that don't know Blu-ray, but that requires the somewhat tedious task of finding out the main playlist -- the order in which separate video files play, and which ones are for DRM and should be skipped. And if Monstune can't figure out which files to play, stopping with the first of several Blu-ray video files, it can't convert that complete title [movie] either.
Installation isn't too bad, though it adds an Old copy of the Microsoft C/C++ runtimes [check Windows Update afterward]. I copied the program's folder from my VM to regular win10 & it worked fine. In addition to the program's folder, an fltk.org folder is added to ProgramData -- I got Dimo, NO-NAME10959721, dmplayer, & ytdownloader folders added to C:\Users\ [UserName]\ -- cat-video-player, doraamon-video-cvt-ult, fltk.org, & ivscat.com folders added to C:\Users\ [UserName]\ AppData\ Roaming\ -- and the runtimes added a few small files to the Windows\ Installer folder, with 16 files added to windows\ System32. The registry get an uninstall key plus a MediaDimo key, but the vast majority of the 411 registry entries added were either cache entries or related to the runtime install.
If you're after something that will work, check out the offerings at videohelp[.]com, like MakeMKV, or look at the DVDFab &/or Passkey apps.