Python MIDI Player with built in synthesizer

Player.py

from mido import MidiFile
import time
import easygui
import fluidsynth
import os

os.system(f'title seclect midi file')
midi_file = easygui.fileopenbox(filetypes=['*.mid', '*.midi'], title='Select a MIDI file')
# check file type
try:
    if midi_file.endswith('.mid'):
        pass
    elif midi_file.endswith('.midi'):
        pass
    else:
        print('File type not supported')
        exit()
except:
    exit()
os.system(f'title init fluidsynth')
print('init fluidsynth')

fs = fluidsynth.Synth(samplerate=44100.0)
fs.start()

sfid = fs.sfload("your soundfont")
fs.program_select(1, sfid, 0, 0)

os.system(f'title reading midi file')
print('reading midi file...')
midi = MidiFile(midi_file, clip=True)
os.system(f'title playing midi file')
print('playing midi file...')

for i in midi:
    if i.type == 'program_change':
        fs.program_change(i.channel, i.program)
    if i.type == 'note_on':
        fs.noteon(i.channel, i.note, i.velocity)
    elif i.type == 'note_off':
        fs.noteoff(i.channel, i.note)
        
    time.sleep(i.time)

os.system('title done')
os.system('pause')