[Cin] Use MAXCHANNELS define in mwindow.C

[Igor BEGHETTO]

32 is the Max Audio channels for the Project (no max audio tracks of 
course), but I think that code is referred to the number of audio 
channels that a video source has in Resources (and it was at max 6 for 
5.1). I can wrong, I don't understand the codes, but Andrew know.

IgorBeg

Il 19/11/2020 11:12, Andrea paz ha scritto:
> Max channels per audio tracks is 32.
>
> see: https://www.cinelerra-gg.org/forum/tutorials/introducing-video-editing-for-beginners-pdf-eng/
>
> (the last reply)
>