zuve_fox 0 Light Poster

hi..
1 have 2 wav files mono duration 30 second. how to combine that 2 files with stereo so that 2 files can run together in 1 wav file?

not joint.mean 2 files joint become 60second.
i want combine so that duration still 30 second because that wav run together.

I am using vb.net for desktop windows

thanx