I downloaded only the aup3 file. The other two files are only temporary files that are used when Audacity has a project open - more info’ here: https://forum.audacityteam.org/t/wondering-what-aup3-shm-aup3-wal-files-are-for-do-i-need-them/96278. Normally, when you close or save a project they disappear. This suggests to me that your computer thinks the file is still open. I was able to open the project file on my machine without doing anything. There are several tracks but only the first one has speech and the second has soft music. Is that right?
Mark B