: Check for a .log file inside. This log, generated by EAC, proves the quality of the rip and confirms no errors occurred during the process.

: This is the audio format. FLAC is a "lossless" format, meaning it compresses the file size without losing any sound quality. It provides the same audio fidelity as a CD but in a smaller file size than uncompressed WAV files.

: This is likely a unique identifier or a shorthand code for the specific release, artist, or uploader. It helps index the file within specific databases or forums.