Sites like OpenSubtitles sometimes have user‑uploaded audio tracks. More reliable sources:
: Open your video in MX Player and immediately pause it. Open External File : Tap the Three Dots menu > Audio > Open . BETTER Download English Audio Track For Mx Player
Sometimes, after downloading a high-quality English track, you might see an error saying This is due to licensing issues with MX Player. The Fix: You need to download MX Player Custom Codecs . Go to Settings > Decoder > General > Custom Codec . after downloading a high-quality English track