TrackSniffer

TrackSniffer is a small script that runs on Mac OS: it's intended to help you display the current track name in an OBS Text Source when playing your stream's background music via the Apple Music app.

When you download and run TrackSniffer.scpt while playing songs in Music, the script will automatically update a text file on your Desktop called track_name.txt to contain the name of the current song.

This script is similar to dzomb's tuneout script, with a few changes:

It targets Music.app instead of the outdated iTunes.app
For simplicity, it uses a hardcoded path (which you can edit yourself) instead of prompting you to choose a file in Finder every time you run it
It's meant to be run directly from Script Editor, without needing to be built to an Application
It writes the track information to the text file in UTF-8 format, meaning that OBS will display Unicode characters (like the é in Pokémon) correctly, instead of going blank when you're playing a song with special characters in the title

How to use this script

Download TrackSniffer.scpt: you can use this link to directly download the file and save it somewhere on your Mac.
Double-click the downloaded TrackSniffer.scpt file to open it in Script Editor.
Click the Play button in the top-right corner of the Script Editor window. This should start the script running, and it should open the Music app if it's not already open.
You should now have a text file on your Desktop called track_name.txt. Whenever the current track changes in Music, the new track information should be written to that file.
The script will run indefinitely, continually updating the text file every few seconds. In order to stop the script, simply click the Stop button or close Script Editor.

Once you've confirmed that track_name.txt is being updated correctly, you can use it in OBS: add a Text source, check the Read from file box in its properties, then scroll down to Text File, click Browse, and select your track_name.txt file.

Customizing the script

As long as you're happy with the default settings, you can just download the script and run it as-is.

If you'd like to change the basic behavior of the script, it's easy to enoguh to do that yourself in Script Editor.

Changing the output file

At the very top of the script, you'll see a couple of lines that determine where the track information will be written:

set OUTPUT_DIRPATH to POSIX path of (path to desktop)
set OUTPUT_FILENAME to "track_name.txt"

By default, this causes the script to write a text file called track_name.txt on your Desktop.

If you want the script to write to a different text file, then you can change these two lines. For example, if you keep your files for your OBS streaming setup in a subfolder of your Documents folder called "Streaming Stuff", and you want the file to be called TheCurrentSong.txt, then you could change these lines to:

set OUTPUT_DIRPATH to "/Users/yourusername/Documents/Streaming Stuff/"
set OUTPUT_FILENAME to "TheCurrentSong.txt"

...that would give you a file called TheCurrentSong.txt in your Documents → Streaming Stuff folder.

In the example above, you'd replace yourusername with your actual username. If you're not sure what your username is, open Terminal and enter whoami.

Note that AppleScript will not understand UNIX path placeholders like ~. Also note that OUTPUT_DIRPATH must end with a trailing slash.

Changing the format of the text

By default, the track information will be presented in this format: <Track Title> - <Artist>. This is controlled by this line in the script:

set track_text to track_name & " - " & track_artist

You can change this line however you want. For example, if you'd prefer <Artist> - <Track Title>, you can swap the position of those two variables:

set track_text to track_artist & " - " & track_name

Changing the update frequency

By default, the text file will be updated every 5 seconds:

set UPDATE_INTERVAL_IN_SECONDS to 5

If you need the text file to be updated as soon as possible whenever the track changes, you can reduce this number, e.g.: