#1
is there any program that converts mp3 files to mid files?
I play guitar.
#3
You can transcribe a song into a MIDI.

But you can't convert the actual song file into MIDI.
I deeply regret the 6661 in my username. Siiiigh. Damn you, 14 year old me, you edgy little bastard.
#4
No, MP3 is actual waveforms, MIDI is notation. There's programs that can transcribe it but they aren't very accurate.