800MB of 5.3GB are ~15% and not 25%, which is a significant difference.
The .ogg files are used for sound effects only and the music is left as high quality audio, and I'm completely fine with it.
If the F14 is anything to go by as an example, the "Music" folder contains your actual Music album, which you get to keep no matter what while the "TapePlayer" folder is exactly that, your music in-game in-cockpit, which (as with the F14) you can replace with your own music even. and if you chose to do that, you still keep your OG F4 soundtrack in "Music".
That means, that effectively, you have 388MB of wasted space, if you are really pedantic about it. Delete your "Music" folder contents and be off. I Can't even buy an SD card small enough today where that amount would matter.
I, for one, will have my own soundtrack in the TapePlayer, as i " I bring my own mixtape " to the different mission types.
Please don't change anything about this approach.
If my assumptions here are wrong (since i am not a programmer at HB), please correct me happily.