There are also a number of special indexes that work on the audio data of your files
The #AudioData indexes the music by its bit depth and sample rate, this is good for identifying different quality recordings
And you can also use #AudioQuality index, this groups the recordings into more user friendly categories
The #AudioFormat simply groups songs by their audio format
#AudioDuration groups songs by their duration, perhaps useful if trying to find a song for a specific length for the purpose of creating a custom playlist.
