swapped alt and ctl for tmux split/window navigation

Trying to get vim to respond correctly to alt has left me unable to execute macros properly.
The easiest solution is to swap my split/window navigation so that ctl navigates between splits (which vim has) and
use alt to navigate between windows (which tmux has). Tmux respects alt, but vim doesn't.
it helps if you put the right code in the right file...