I just fixed and got the title theme working, however for the Menu Theme, the choosing a game-mode, and choosing characters/kart/driving mode the audio goes silent. Is there a reason that it is not working for those specific segments of the theme but yet it works with the Choosing Difficulty, and Choosing a courses theme? I've set the rate of the segment, which is a minute and 2-4 seconds, which actually works, with the Music shown as 28000 Hz and yet the Project Rate doesn't show that actual number. Do I need to export the file slightly different?
Update: never-mind, found the solution. Hoping it works now.
Although my Options Menu theme seems to never be working, and yet I am copying the exact code needed to change the audio from the normal one to the Options Menu Theme I have chosen. Any idea why that is?
Update 2: apparently my Entire Menu theme has become silent for all segments of when the theme plays itself.