Music compression not doing anything?

I’m just about to publish my app to the store but unfortunately, my .apk is 2mb to big, I looked at the editor and it said the sounds are taking up the majority of the space. One of my sound files was 9.8mb so I compressed it to 4.7mb using the slider in the inspector. I rebuilt my .apk but the editor is still saying the sound file is 9.8mb. am I doing something wrong?

Here is my editor log:


This is what my Inspector looks like for that .mp3


This is because you have it set to Compressed In Memory. This should only be used if memory use is an issue. It will exist in memory in a compressed format, not on the disk.
If you select Stream From Disk or Decompress On Load your file size should be smaller.