Your + voltage will be up and - will be down (in schematics, your ground will most likely be downward, and also in most audio circuits your + will hit a capacitor first). If you want to use a pot or two, you can replace any of the regular resistors with a pot of the same value, or you can place one on the output (try a 100k first) or on the input (I suggest trying this on breadboard first so you can play around with all of the different options. Since you'd be using this for recording, it would be a neat idea to use pots for your resisters so you can have the most "teakability"). In most audio circuits, your signal will first hit either an input cap, or a variable resistor of some sort for bias. Also,the last thing most audio circuits will hit is an output cap or variable resistor for volume. Voltage ins will hit a resistor first (you can replace these with a pot as well to adjust voltage, some fuzz pedals work well with "sagging power"). The schematic looks like its missing a few things, at least for me to be able to put it together properly. I'm guessing that the top circle will be your signal out, and the bottom circle is your ground out that will be tied to your jack. I don't really know where the input is, if this is like a normal schematic, the Vin would be substituted with your signal in on the top (next to the cap) and your ground in would be on the bottom left next to the resistor. This is just speculation though. As for the values, do a google search for "Ohm's law" and play around with the math. I'd suggest starting with a .1uF cap on the input and on the output. 100k resistors and pots are usually very popular for effects. Let me know if you get it up and running, sounds neat.
Rory
