Firmware, GPAD_API, Rev Firmware:0.58.4+pr.86, Mute Delay Playing Long MP3 file

[ForrestErickson]

Describe the bug
A clear and concise description of what the bug is.
Short Summary of the expected behavior:
Press the Mute button and the Krake should mute.

Short Summary of the buggy behavior:
When playing a long MP3 file mute only takes effect after the file loops.

To Reproduce
Steps to reproduce the behavior:

1. Load into the SD Card the long file of audio sweep: sweep_full_-6dBFS.mp3
2. Play the file by sending an alarm message to the DUT.
3. Confirm the file plays with a duration of approximately 13 seconds. (Measured by ear by Lee and by counting.)
4. During a loud part of the sweep press the Mute button.
5. Confirm file plays to completion and then play stops till Mute is pressed again.

Expected behavior
A clear and concise description of what you expected to happen.
Pressing Mute should immedialy change the state of playing the MP3 file.

Screenshots
If applicable, add screenshots to help explain your problem.

Hardware description
Model: Krake
Serial Number: US 0014
Other: Tested with the sweep_full_-6dBFS.mp3 as the second file on the SD card. Tested by sending an a1 message to the DUT.

Test Equipment
Model: NA
Serial Number: NA

Additional context
Add any other context about the problem here.