An experiment in writing a golang CLI to replace some of my ruby scripts for managing/manipulating mp3s.

Note: These scripts are fairly customized to my use-case.

tn (command)

Set the cover image based on filenames. Running the artwork command will update the cover art if an image is found with a matching filename.

tn artwork

Basically, it assumes your files look like this:

ls ~/Downloads/

Owsey - And Then I Woke Up.jpg
Owsey - And Then I Woke Up.mp3

Removes all existing id3 tags from all mp3s in the current directory.

tn clear

Set the cover image for a group of mp3 files in a directory. Assumes an image cover.jpg exists in the directory in which you are running the command.

tn cover

Load all mp3s in the current directory into iTunes.

tn itunes

Set artist name:

tn tag --artist "Owsey"

Set the album name:

tn tag --album "To The Child Drifting Out At Sea"

Set the title:

tn tag --title "I've Lost All Light In My Life"

By default, these commands will set on all mp3s in a given directory. For artist and album, this is probably desired but for song titles you probably will want to specify the file to update:

tn tag --title "I've Lost All Light In My Life" --file song.mp3

Multiple flags can be passed at once:

tn tag --artist "Owsey" --album "To The Child Drifting Out At Sea"

Autotagging is a bit of a unique use-case. If your files are named in the format <artist name> - <song title>.mp3, you can use the --auto flag to set the artist and title for all files in a directory using:

tn tag --auto

View the current tags on mp3s in the current directory:

tn tags

If you'd like to see if there's an image, you can pass the --artwork flag:

tn tags --artwork

Copyright (c) 2016 Steve Agalloco.