Use deck C/D as stem controls
Description and Instructions
Should only override the default mapping if a stem deck is loaded on that side, and can be disabled/enabled using SHIFT+STEMS.
Inspired by the similar feature in VirtualDJ (just using the EQ for volume controls).
Press shift+filter button on the corresponding side to set that set of EQs +filter (deck C/D) to act as stem filter controls and enable stem filters. Press shift+filter again to disable this change, and the filters themselves.
Also made the FX arrow indicators for decks C&D display the status of the mod: to one side mod enabled, to the other, filters also enabled. Seemed like the best place to display if you're not using those decks anyway (and unfortunately the filter light gets overridden if you change channel FX, so couldn't really use that).
of your mapping
