[HELP] Rename tracks help please and help with chapters

[Selur]

Soundhandler: Sounds like you also installed ffdshow and that is also used inside MPC HC.
Looking at the muxing call:

"D:\Programs\Hybrid\64bit\MP4Box.exe" -add "G:\PLEXME~1\NEWTHI~1\ERAGON~1\13_12_~1.MP4" -add "C:\Users\mapsk\AppData\Local\Temp\IID_1_~3.AAC"#audio:name="Main Audio":lang="en" -mpeg4 -add "C:\Users\mapsk\AppData\Local\Temp\IID_2_~4.AC3"#audio:name="Secondary Audio":lang="en" -chap "C:\Users\mapsk\AppData\Local\Temp\13_12_35_0210__13.chp" -itags tool="Hybrid 2018.07.27.1" -tmp "C:\Users\mapsk\AppData\Local\Temp" -new "G:\PLEX Media\New Things To Sort\Eragon (2006)\13_12_35_0210__14.mp4"

Only two audio tracks are added, so the Soundhandler is something that is added due to your playback configuration.