I search assembler variant convert mp3 data sound to wav.
In 2007 I see c example for dos 4kb

Or get info ogg file format structure.
https://formats.kaitai.io/ogg/

And I want get decoding formula.
How decoding mathematecly do.
https://stacktuts.com/how-to-generate-the-audio-spectrum-using-fft-in-c

How using id3lib.dll from mbx(music box) ?

How using libogg.dll 33kb ?
For libogg.dll need vorbis dll ?

I'd suggest grabbing an existing decoder (e.g. libavcodec which is what ffmpeg uses to decode MP3) and linking it with your app. See here for an example

If you want to write your own MP3 decoder, I'd suggest writing it first in a higher-level language (e.g. MATLAB/Python) then a lower-level language like C and then finally assembly if it is really what you want.

Note that MP3 is not the same thing as OGG Vorbis (OGG is the outer container, Vorbis is the audio codec). https://gitlab.xiph.org/xiph/tremor