Please run rhythmbox in a terminal with the appropriate debug or verbose options. Try to use the plugin and attach a log of any useful output here.
Thanks

• Message: 16:06:25.488: Remote error from secret service: org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.secrets was not provided by any .service files
  Traceback (most recent call last):
  File "/usr/lib/rhythmbox/plugins/magnatune/magnatune.py", line 94, in do_activate
  self.entry_type = MagnatuneEntryType()
  File "/usr/lib/rhythmbox/plugins/magnatune/magnatune.py", line 50, in init
  self.account = MagnatuneAccount.instance()
  File "/usr/lib/rhythmbox/plugins/magnatune/MagnatuneAccount.py", line 58, in instance
  instance = MagnatuneAccount()
  File "/usr/lib/rhythmbox/plugins/magnatune/MagnatuneAccount.py", line 70, in __init
  self.secret_service = Secret.Service.get_sync(Secret.ServiceFlags.OPEN_SESSION, None)
  GLib.Error: g-dbus-error-quark: The name org.freedesktop.secrets was not provided by any .service files (2)

Useful, Thank you

The first line there and a bit of googleing tells you everything you need to know.

You do not have a secrets service wunning. You need gnome-keyring or ksecretservice installed and running

So next questions:
Is one of them installed?
Is it running?

I believe not. Both questions.

I have now installed gnome-keyring and get this:

Traceback (most recent call last):
File "/usr/lib/rhythmbox/plugins/magnatune/magnatune.py", line 94, in do_activate
self.entry_type = MagnatuneEntryType()
File "/usr/lib/rhythmbox/plugins/magnatune/magnatune.py", line 50, in init
self.account = MagnatuneAccount.instance()
File "/usr/lib/rhythmbox/plugins/magnatune/MagnatuneAccount.py", line 58, in instance
instance = MagnatuneAccount()
File "/usr/lib/rhythmbox/plugins/magnatune/MagnatuneAccount.py", line 79, in __init
self.secret = items⁰.get_secret().get()
AttributeError: 'NoneType' object has no attribute 'get'

I just closed Rhythmbox:

Traceback (most recent call last):
File "/usr/lib/rhythmbox/plugins/magnatune/magnatune.py", line 132, in do_deactivate
shell.props.shell_player.disconnect(self.pec_id)
AttributeError: 'Magnatune' object has no attribute 'pec_id'

Have you configured the plugin with you account info?

If I try to do that:

(rhythmbox:2406): Rhythmbox-WARNING **: 17:28:35.247: Unable to grab media player keys: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SettingsDaemon.MediaKeys was not provided by any .service files
Traceback (most recent call last):
File "/usr/lib/rhythmbox/plugins/magnatune/magnatune.py", line 156, in init
self.account = MagnatuneAccount.instance()
File "/usr/lib/rhythmbox/plugins/magnatune/MagnatuneAccount.py", line 58, in instance
instance = MagnatuneAccount()
File "/usr/lib/rhythmbox/plugins/magnatune/MagnatuneAccount.py", line 79, in __init
self.secret = items⁰.get_secret().get()
AttributeError: 'NoneType' object has no attribute 'get'
Traceback (most recent call last):
File "/usr/lib/rhythmbox/plugins/magnatune/magnatune.py", line 228, in do_create_configure_widget
fill_account_details()
File "/usr/lib/rhythmbox/plugins/magnatune/magnatune.py", line 174, in fill_account_details
(account_type, username, password) = self.account.get()
AttributeError: 'MagnatuneConfig' object has no attribute 'account'

Hmmm.. another missing service. It really looks like that pulg-in Requires a lot of Gnome.
Again the first line tell you you need gnome-settings-daemon installed and running.

Installed gnome-settings-daemon, unable to find a .service for it to run.

This is an old bug that is still current. Do you need more info or something?

It seems you ae unclear on some basic concepts.

gnome-settings-daemon is not a systemd/openrc thing. so it will not have an associated .service file
It is a DE (Desktop Environment) thing and since you are not in Rhythmbox's native DE it falls to you to launch all the services it requires when your DE starts up.

Please check on the web for instruction on how to do this. I'd suggest searching "XFCE launch gnome-settings-daemon"
(I put then XFCE in the because from some of your other "bug" reports it seems to be the DE that you are currently using)

After getting Ani up and running with the gnome services this requires it failed out with:

 1 Traceback (most recent call last):                                                                                                                                                                             
 2   File "/usr/lib/rhythmbox/plugins/rb/Loader.py", line 44, in _contents_cb                                                                                                                                     
 3     (ok, contents, etag) = file.load_contents_finish(result)                                                                                                                                                   
 4 GLib.Error: g-io-error-quark: Operation not supported (15)                                                                                                                                                     
 5 Traceback (most recent call last):                                                                                                                                                                             
 6   File "/usr/lib/rhythmbox/plugins/rb/Loader.py", line 44, in _contents_cb                                                                                                                                     
 7     (ok, contents, etag) = file.load_contents_finish(result)                                                                                                                                                   
 8 GLib.Error: g-io-error-quark: Operation not supported (15)                                                                                                                                                     
 9                                                                                                                                                                                                                
10 During handling of the above exception, another exception occurred:                                                                                                                                            
11                                                                                                                                                                                                                
12 Traceback (most recent call last):                                                                                                                                                                             
13   File "/usr/lib/rhythmbox/plugins/rb/Loader.py", line 32, in call_callback                                                                                                                                    
14     v = callback(data, *args)                                                                                                                                                                                  
15   File "/usr/lib/rhythmbox/plugins/magnatune/MagnatuneSource.py", line 219, in update_cb                                                                                                                       
16     remote_changes = remote_changes.strip().decode("iso-8859-1")                                                                                                                                               
17 AttributeError: 'NoneType' object has no attribute 'strip'  

Looking on the Rhythmbox bug tracker this plugin has many outstanding issues:

https://gitlab.gnome.org/GNOME/rhythmbox/issues?scope=all&utf8=%E2%9C%93&state=opened&search=magnatune

Including this exact (or a nearly identical) one:

https://gitlab.gnome.org/GNOME/rhythmbox/issues/1541

Also looking at the gitlab for this its clear that this plugin is not getting any love. The last commit was several years ago.
(Actually ther was some activity 8 month ago so not dead)

Just tried Rhythmbox/Magnatune on an Arch/mate setup. It works there.
So We are back to an issue with ani set-up (more missing gnome stuff) Is gtk3 installed?
or there is an actual Parabola Issue.

freemor

Yes gtk3 is installed.

As of now. Magnatune works in getting the preferences up and it remembers what account I put in. I click on the "Magnatune" label in Rhythmbox to get to the list of songs, I'm presented with the front page of the plugin and then nothing happens (it's just a placeholder right now with no functionality).

Although, Soundcloud doesn't work either so maybe this is an issue with my setup?

bill-auger:

I can't see the original issue right now. Everything works as expected.