@redmasq said in Adding an audiobook filter to the series page:

As a separate note, I like the premium ebooks provided on the website: if licensing allows, I would like to eventually see DRM-free mp3 or ogg format audiobooks.

Some of the audiobooks are already available DRM free, it just depends on which store you buy them from (which of course is impacted by which company is producing the audiobook as I believe at least one company JNC is partnered with only releases their audiobooks on Audible). Slayers is available on Downpour and Libro.fm, DRM free audiobook platforms, so I'd expect the other JNC direct productions to go there, and it seems all the ones produced by Tantor Media are there too. Not sure on the format options available there though.

Slayers: Volume 1 by Hajime Kanzaka is now available as a DRM-free mp3 audiobook on Downpour.com
https://www.downpour.com/slayers-volume-1?sp=794225

The publisher is listed as "Findaway World". I did some searches for that publisher and "light novel" and "Young Adult Fiction" and found some more audiobook light novels by J-Novel Club and Seven Seas. Findaway publishes other audiobooks too.

The searches:
https://www.downpour.com/catalogsearch/result/?q="findaway world"#q=light novel&idx=live_downpour_en_en_products&p=0&dFR[imprint][0]=Findaway World%2C LLC&is_v=1

https://www.downpour.com/catalogsearch/result/?q="findaway world"#q=&idx=live_downpour_en_en_products&p=0&dFR[imprint][0]=Findaway World%2C LLC&fR[categories_without_path][0]=Young Adult Fiction&is_v=1

Some of the lightnovels.

Reborn to Master the Blade: From Hero-King to Extraordinary Squire: Volume 1 by Hayaken
https://www.downpour.com/catalog/product/view/id/832611/s/reborn-to-master-the-blade/?sp=832612

The Saint's Magic Power is Omnipotent (Light Novel) Vol. 1 by Yuka Tachibana
https://www.downpour.com/the-saint-s-magic-power-is-omnipotent-light-novel-vol-1?sp=796306

Yen Audio titles are also available on Downpour.com
https://www.downpour.com/catalogsearch/result/?q=yen audio#q=yen audio&idx=live_downpour_en_en_products&p=0&dFR[imprint][0]=Yen Audio&is_v=1

Including:
The Miracles of the Namiya General Store by Keigo Higashino
https://www.downpour.com/the-miracles-of-the-namiya-general-store?sp=730497
Not a light novel, but a time-travel letter-writing mystery.

I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 1 by Kisetsu Morita,
release scheduled for February
https://www.downpour.com/catalog/product/view/id/873529/s/i-ve-been-killing-slimes-for-300-years-and-maxed-out-my-level-vol-1/?sp=873530