YouTube Channels with Subtitles:
Point of View - YouTube - It has short informational videos covering a wide range of topics. She speaks rather quickly so beginners may need to slowdown the playback speed or use the auto-pause feature in Language Reactor. (Typically 10-30 minutes)
Pud (พูด) - These videos are created in the TED-Ed style. (5-10 minutes)
Ted-Ed Thai - This has a good selection of translated videos, but the subtitles are often not in-sync with the audio) (~5 minutes)
Thai Disney Songs - Disney songs dubbed in Thai.
Mahidol University - This Thai University has produced a nice range of content. (5-30 minutes)
Thai PBS - It has a lot of travel and food documentaries.
These don't work well with Language Reactor or LingQ.
Nuan (นวล) - Ted-Ed style videos (5-10 minutes)
Kids Planet ไทย - This channel has lots of fairy tales.
Thailand has a few big producers of podcasts: