Encrypted .m3u8 Audio

[wisnoskij]

Hello all,
I have thousands of .ts files downloaded to be PC. They are encrypted, and I have a .key file and a .m3u8 file. The .m3u8 file is wrong, now that the location of the files has changed, and I am not sure about the proper syntax. I am also wondering what syntax to use for ffmpeg.

It needs to combine the .ts files, and presumably I want it converted to mp3 or aac (it is speech).

#EXTM3U
#EXT-X-ALLOW-CACHE:NO
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:0
#EXT-X-KEY:METHOD=AES-128,URI="http://localhost:[port]/hls/keys/nax_9781843794066.key"
#EXTINF:10,
http://localhost:[port]/filesequence0000000.ts
#EXTINF:10,
etc...