Low A Glitch help

[drummaniac28]

I started to make a song on Mario Paint and realized that I needed to use a note higher than I could make on the program. I looked into how to edit soundfonts and what not, and I download Viena. I am using Cat333's Mario Paint Real soundfont, and I need to make the sax an octave higher. I edit the sound, replaced the coin with the sax an octave higher, and everything works fine, except for the Low A Glitch. The note keeps playing after I use it, and I can't make the song I'm making sound right. If anyone knows how I can fix(well, un-fix technically) this, I would really appreciate it.

[KM]

You can't Low A glitch the coin or boo, you'll have to put the same note where you want to mute it and lower it to the lowest volume

[drummaniac28]

Then I'll just replace the Shy Guy, I won't use him anyways. Thanks for the help.