Mame inp runs require the version of Mame the inp file was recorded in (Wolfmame149 in this case) and then the inp from the submission link would be placed in the appropriate folder and viewed using the -playback command. The dropbox inp file needs to be downloaded from the top right corner (not clicked on), unzipped and the .inp file is then dropped inside Wolfmame149's inp folder.
Wolfmame149 can be found here (Page 5): http://replay.marpirc.net/index.cgi?mode=frames
It's been a minute since I uploaded this and it's about to get overwritten. Dropbox has recently started tinkering with their interface. I'm looking into the inp issue and will included a video replay conversion and additional links to the inps then vet it all with the mods shortly. Thanks for pointing out the issue.
9.14.24 Update: A playlist of my DK speedruns containing this run is up on Youtube. Should have them all converted and available in a few days: https://youtube.com/playlist?list=PLEFtudsfr4I2ahF7WP890kHswx0u8eiN5&si=kGBhSabiuz1FVw1V