Since TorrServer exports the namesake files to M3U, I suggest adding the option to download external subtitles: If M3U has .ass,.srt files, then offer to download it to /storage/emulated/0/DownloadKodi and MX Player can automatically use subtitles from predefined folders.
The small size of the subtitles will not cause filling or overwriting of the memory.
Since TorrServer exports the namesake files to M3U, I suggest adding the option to download external subtitles: If M3U has
.ass
,.srt
files, then offer to download it to/storage/emulated/0/Download
Kodi and MX Player can automatically use subtitles from predefined folders. The small size of the subtitles will not cause filling or overwriting of the memory.