create a couple functions to append a ugen to the root of a synth, for attaching out, pan, etc...
inst and synth forms should evalute the defaults rather than expecting them to be numbers (to use equations, constant vars, etc...)

Helpers

rather than using a plain multiply for volume adjustment, we should have a built-in helper that uses dbamp and multiply to adjust volume logarithmically, corresponding to perception.

use a range of 0 - 1.0, so it works automatically with GUI controls and other ugens.

Studio

route all synths and samplers to a main mixer bus, providing panning, EQ, and volume controls.
- figure out how FX should work into this
have a mechanism to route sound to a preview channel for listening to something in headphones to try it out.
create a basic EQ that can be used on any track
basic record functionality for root group

create a basic volume and pan control node that can be used for the master volume and per synth-track control
implementing some basic midi mapping
fill out metronome functionality
hook up the sequencer
implement a portamento helper on top of slew
Instrument groups are nil if they're created before the server is booted

view a table or tree of running synths with the ability to kill and maybe modify control params
allow for re-arranging nodes and groups using a tree/table view
figure out how best to attach meta-data to the [unary,binary]-op-ugen

make midi->hz and friends multimethods (or use types and protocols?) so they operate immediately on numbers, but generate ugens on input proxy or ugen arguments.
add docs to Unary and Binary op ugens
add another argument mode to ugens so that buffers and samples can be passed to ugens as arguments and their :id property will be used
- get rid of UGen wrapper function currently doing this for all ugens
implement the rest of the argument modes for ugens, as described in docs/dev/core/ugen_definition.mdml. (currently there is just :append-seq)