openttd.stupzow.ru
OpenTTD for Windows (64 bit)
Installer
Zip Archive
OpenTTD for Linux (64 bit)
Tar Archive
Graphics package (OpenGFX)
Zip Archive
Sound package (OpenSFX)
Zip Archive
Music package (OpenMSX)
Zip Archive
It is not necessary to download OpenSFX and OpenMSX as you can download this directly in OpenTTD game menu.
To do this - just click "Check Online Content" from main menu, type "Open" in a search line and download those packages.
But if you prefer to download them from this page - just unzip .zip files into into <OpenTTD_game_dir>/baseset directrory.
OpenTTD packages for all other platforms for version 14.1 can be found on official CDN
OpenTTD Official page with the latest packages