A USFLIB file is a library file used in Nintendo 64 emulation. These sorts of files contain instructions, compound data, and other information that can aid in the process of decoding specific audio data from Nintendo 64 games. The primary use of USFLIB files is to play Nintendo 64 music on a device other than a Nintendo 64 game console.
Opening and Using USFLIB Files
USFLIB files are not meant to be opened manually, as they serve specific functions within the emulator's framework. However, in case you still want to look into the content of these files, something like a Hex Editor would be a suitable choice.
One recommended hex editor is HHD Software's Free Hex Editor.
Working with the USF SDK
The Ultra Star Finder Software Development Kit (USF SDK) is a collection of libraries and tools that are particularly useful when working with USFLIB files. The kit includes several PlayStation Portable (PSP) applications that work with USFLIB files, such as the PSound music extraction utility.
USFLIB In Nintendo 64 Music Emulation
The USFLIB files are integral parts of the N64 sound library. They are required for sound emulation when one is playing Nintendo 64 games on a non-native platform, like a computer or PSP. The primary use of USFLIB files is to facilitate the playback of Nintendo 64 game music on these devices, with higher sound quality than the original.
USFLIB File Important Information
The USFLIB file extension is associated primarily with the Nintendo 64 Music File format and the Ultra Star Finder software application. Misuse of these files could lead to errors in emulation or cause harm to your computer�s functioning. Always make sure to verify the content of these files before executing.