Everything fits together nicely, and indeed the capacitor's value didnt really matter, the readings are nice, but well, seems a bit slow compared to the pulse from the music, small clicks could not be projected, as the matter of fact, the readings became zero as soon as the volume is at 1/2 and it'll be running on the 'animated displays' meant for silent/earpiece mode.
I'm thinking if I were to reduce the 600k resistor, will it be more 'responsive'? and i wonder if the capacitor's decay value can be decreased.
Nevertherless, it works like a charm and lights to the beats when all elements are aligned here, haha!