Here's why:
* Guitar Hero 3 uses a proprietary format: The game's song files are encrypted and encoded in a specific format that is not compatible with standard USB drives or file systems.
* PlayStation 3's security: The PS3 has security measures in place to prevent unauthorized content from being loaded. It's designed to only accept official game data and updates.
How to Get More Guitar Hero 3 Songs:
* Purchase DLC: Guitar Hero 3 had downloadable content (DLC) packs available. These packs often contained multiple songs and could be purchased through the PlayStation Store. However, the availability of DLC packs may vary depending on the current state of the PlayStation Store.
* Use a Guitar Hero 3 CD: If you have the original game disc, you can use that to access the base set of songs included with the game.
* Consider newer Guitar Hero titles: Newer Guitar Hero games offer more song options and may be more easily compatible with modern systems.
While it's not possible to directly transfer songs from a USB stick, there are still ways to expand your Guitar Hero 3 song library, though they might require a bit more effort.