Directly importing MP3 files into the game directory isn't possible on consoles due to file system restrictions. However, you can still achieve a "Custom Radio" experience using built-in system features.
The experience differs significantly depending on which version of the game you are playing: PC & Consoles (PS5, Xbox, Switch): gta san andreas definitive edition custom radio
The Definitive Edition’s engine is pickier than the original’s RenderWare engine. To avoid crashes or stuttering, you need to respect the following rules for your : Directly importing MP3 files into the game directory
Creating custom radio stations in GTA San Andreas Definitive Edition is a relatively straightforward process. Here's a step-by-step guide to get you started: gta san andreas definitive edition custom radio
To see the current audio settings and radio interface in the Definitive Edition: