We want to play some MID sound.
What are MID sounds, do you mean MIDI sounds the web site in not written in the best of English.
From the looks of it all it is, is a speaker giving a click when it receives a logic high. By giving it successive high / low you get a buzz. The frequency of this is dependent on how fast you toggle the output just like a speaker. So you will not be able to produce MIDI sounds with it.
using digital buzzer module in anaolog pins. Is that possible to be?
The analogue pins can be treated just the same as digital output pins if you call them pin14 for A0 pin 15 for A1 and so on.