I just bought the OST and OST Atmosphere's and Additionals.The latter includes some playlists:
"We also included some playlists for your convenience. Their filenames describe which music is contained in them. "All Tracks, incl. OST Essentials.m3u" playlist assumes you have also purchased the OST Essentials. If you have, you should see the mp3s from both DLCs in this directory. "

Unfortunately I'm unfamilar with playlists and how to make them work.
I have downloaded everything (playlists and mp3s), but when I click on one of the downloaded playlists my media player says it's unable to locate the mp3s.

How do I make it work?

Thanks

m3u playlists are simple text files, you can edit them with a text editor (like "notepad") and check if paths and filenames are correct, you have to consider the playlist m3u location as the starting point of the path (for relative paths).

If you put the playlist file in the songs folder you can eliminate the paths inside the playlist.

Thanks Skess01

Didn't realise m3u's were simple text files - silly me!

Even so, when I open one in notepad I can't see any obviously specified filepath.
The first few lines of one of the playlists reads as follows:

#EXTM3U
#EXTINF:141,a01 Skalitz 1403
a01 Skalitz 1403.mp3
#EXTINF:120,a02 People of the Land
a02 People of the Land.mp3
#EXTINF:68,a03 Till Our Heads Turn White
a03 Till Our Heads Turn White.mp3
#EXTINF:44,a04 In the Name of the King
a04 In the Name of the King.mp3
#EXTINF:110,a05 Beer and Women
a05 Beer and Women.mp3
#EXTINF:67,a06 The Talmberg Theme
a06 The Talmberg Theme.mp3
#EXTINF:264,a07 Skalitz Is Dying
a07 Skalitz Is Dying.mp3
#EXTINF:78,a08 St. James
a08 St. James.mp3
#EXTINF:201,a09 Sigismund's Army at the Gates
a09 Sigismund's Army at the Gates.mp3
#EXTINF:115,a10 Lady Steph and Henry

The whole text file is like that. Can't see a filepath.
And why do all the filenames have "a" before them?

I'm obviously being really stupid here, but I can't figure it all out!
Any further guidance welcome.

Thanks

You're welcome :)

To be honest I don't know what the "a" before the song filename is for.

I would do:

1. a -new- copy of the m3u file (eventually renaming it as you prefer)
2. edit the -new- m3u file (make sure it's in the songs folder)
3. change all songs names inside -new- m3u making sure they are the real filenames of the songs (so for example "a01 Skalitz 1403.mp3" will become "01 Skalitz 1403.mp3" if this is the real filename of the song)
4. save and try

Anyway I think that if you put in a new file (naming it as you wish with extension "m3u") only the songs filenames it should work fine, like this:

01 Skalitz 1403.mp3
02 People of the Land.mp3
03 Till Our Heads Turn White.mp3
04 In the Name of the King.mp3
05 Beer and Women.mp3
06 The Talmberg Theme.mp3
07 Skalitz Is Dying.mp3
08 St. James.mp3
09 Sigismund's Army at the Gates.mp3