Video & Audio Editing

[SetoKaiba2]

Hi, i want to know if there is free software that can do what i desire.
I have 2 versions of a Japanese Anime, a HQ mkv version (Japanese Audio) & a LQ mp4 version (English Audio).
How can i get the English Audio from the LQ version to the HQ version?

 

[SetoKaiba2]

ok it seems i found a solution using a combination of AVC & VLC, it works but is time consuming. any other methods are welcome.

 

[audiospecaccts]

Pitivi is what I use in Linux.