The purposes of blind playtesting, and how to know when you've done it enough:

http://brandonthegamedev.com/how-many-blind-play-tests-does-your-board-game-really-need/

Intellectual property, trademark and liability in board games (audio):

http://thegamecrafter.libsyn.com/game-law-with-zach-strebeck-and-the-game-crafter-episode154

Advice for how to create a good player experience (audio):

http://www.boardgamedesignlab.com/crafting-the-player-experience-with-matt-leacock/

How a game's structure can affect player engagement (audio):

http://ludology.libsyn.com/ludology-episode-166-impulse-control

Writing a comprehensible rulebook (video)

How long it will take to make your game, at a bare minimum:

http://brandonthegamedev.com/the-long-haul-project-why-making-games-takes-a-long-time/

Advice for how to filter playtester feedback (audio):

http://thegamecrafter.libsyn.com/filtering-feedback-with-the-game-crafter-episode153

Some of the challenges that come with using licensed IP in a board game (audio):

http://theforbiddenlimb.libsyn.com/total-recall-post-mortem-ep-62

How to make prototype tiles that last:

https://boardgamegeek.com/blogpost/71644/hands-practical-guide-making-prototype-tiles-last

Are there principles of "good" game design, and if so what are they? A BoardGameGeek designers forum discussion:

https://boardgamegeek.com/thread/1900554/open-discussion-principles-good-design-and-poor-de

How indie game publishers make money:

https://www.reddit.com/r/tabletopgamedesign/comments/7ig5bh/curious_how_indie_game_publishers_make_money/

Different ways of handling turn order in a combat-based game:

https://www.reddit.com/r/tabletopgamedesign/comments/7if8z0/discussing_turn_structure_in_wargaming/

Why "dead" turns and lose-a-turn mechanisms are frowned upon in modern games (video)

The ins and outs of designing an escape-room game (audio):

http://www.boardgamedesignlab.com/designing-escape-room-games-with-juliana-patel-and-ariel-rubin/

Marketing and distribution insights for publishers and designers (video)

Advice for young board game designers:

https://boardgamegeek.com/thread/1897177/advice-my-7th-grade-designers

Advice for making a career in board games (video)

“Try creating a short description for your game project and list out what you want for it & from it as a project/product. Write as if the game was already finished, then use it as a goal to shoot for.”

— C.M. Perry

Different types of asymmetry in board games:

http://www.kindfortress.com/2017/12/06/design-patters-asymmetry-part-2/

Advice for juggling multiple designs--a Board Game Design Forum discussion:

http://www.bgdf.com/forum/game-creation/design-theory/handling-numerous-designs