Schematic Check Needed Please.

yeah.. I was planning on following the schematic of the WaveShield..and that link I sent:

(although one uses a smd potentiometer ..and the waveShield does not)

Im fine with static caps/resistors.. as long as we get a decent range.. (if thats what the pot was used for?)

but I woud like to use a 100uF tant cap.. ON-BOARD.. but the speaker pads.. (I was looking and I think if we rotate some caps over there... there might be room.. not sure what else is needed? (component wise)

surface mount 100uF tantalum capacitor.. Im not familiar with the package names? package size D is it?