For each track fader (also known as our mixing/volume control), it'd be nice to actually render a fader-looking control knob so that it's clear that these Sliders are mixing knobs and are not mistaken for shuttling playback of that track, for instance. We can create a graphic to be used for these Sliders, which will look like this:
For iOS, we will also want a down/highlighted state, so usability feels good when the user presses down on the fader:
We can now create two versions of each of these files and drop them in app/App_Resources/iOS; the ...
