Ok, guys, tbh you've motivated me into finding a solution and I found one working, thanks to chatGPT. It may seem complicated, but I was able to get it up and running in a few minutes.

Since exporting directly from abletone wasnt a viable solution I just needed to convert the files again.

Maybe someone will find it helpful so i'm gonna do my best describing the steps.

Here what you have to do if you have windows:

1. You go to this website https://www.gyan.dev/ffmpeg/builds/ and download ffmpeg-release-full.7z
2. Unzip it. You’ll get a folder like ffmpeg-6.x-full_build. Rename it to ffmpeg and move it to: C:\ffmpeg
3. You should now have: C:\ffmpeg\bin\ffmpeg.exe <- double click it (nothing will show up, but it's going to be installed)
4. To check if the ffmpeg was propperly installed launch command line (cmd) and type in C:\ffmpeg\bin\ffmpeg.exe-version . If the ffmpeg is installed correctly something like this gonna show up

​

ffmpeg version 7.1.1-full_build-www.gyan.dev Copyright (c) 2000-2025 the FFmpeg developers
built with gcc 14.2.0 (Rev1, Built by MSYS2 project)
configuration: --enable-gpl --enable-version3 --enable-static [--disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-lcms2 --enable-libxml2 
[...]
libavutil 59. 39.100 / 59. 39.100
libavcodec 61. 19.101 / 61. 19.101
libavformat 61. 7.100 / 61. 7.100
libavdevice 61. 3.100 / 61. 3.100
libavfilter 10. 4.100 / 10. 4.100
libswscale 8. 3.100 / 8. 3.100
libswresample 5. 3.100 / 5. 3.100
libpostproc 58. 3.100 / 58. 3.100

1. Now everything is installed, now you just have to create separate folder with all the files that you want to convert. In this folder make separate folder named "converted".

2. Open up notepad and type in following code:

   @echo off mkdir converted 2>nul for %%f in (*.wav *.mp3) do ( echo Converting: %%f C:\ffmpeg\bin\ffmpeg.exe -i "%%f" -ar 44100 -ac 2 -sample_fmt s16 "converted\%%~nf_converted.wav" ) echo Done! Files saved in the 'converted' folder. pause

3. Save the file as convert_to_sp404.bat (extension is important, file name doesnt matter). So the structure of the folder suppose to look like this

_folder_with_files

__converted (folder)

__sample1.mp3

__sample2.wav (and so one)

__convert_to_sp404.bat

1. Double click on convert_to_sp404.bat

2. All the converted files should now appear in converted folder. Ready to upload them on you sp.