Code:

 

#dZ's Media Player
import pygame, os.path
from pygame.locals import *
import sys


pygame.mixer.init()
musicList={}
x=0
y=70
playing=False
paused=False
change=False

pygame.init()
screen = pygame.display.set_mode((450, 600))
pygame.display.set_caption("dZ's Media Player v1.0")
pygame.mouse.set_visible(1)
background = pygame.Surface(screen.get_size())
background = background.convert()
background.fill((250, 250, 250))

def recur(DIR):
for f in os.listdir(DIR):
if f[len(f)-4] != '.':
recur(DIR+'\\'+f)
elif f.endswith(".mp3") or f.endswith(".mid"):
print f
musicList[len(musicList)]=''+DIR+'\\'+f+''
return musicList

musicList=recur(os.curdir)

font = pygame.font.Font(None, 36)
text = font.render("Welcome To dZ's Media Player", 1, (10, 10, 10))
font = pygame.font.Font(None, 20)
text1 = font.render("down=play/pause up=stop right=next left=previous q=quit", 1, (10, 10, 10))
background.blit(text, (0, 0))
background.blit(text1, (0, 30))
# Blit everything to the screen
screen.blit(background, (0, 0))
pygame.display.flip()

font = pygame.font.Font(None, 20)
text = font.render("Now Playing:", 1, (10, 10, 10))
text1 = font.render("Next Song:", 1, (10, 10, 10))
text2 = font.render("Previous Song:", 1, (10, 10, 10))
background.blit(text, (0, 60))
background.blit(text1, (0, 110))
background.blit(text2, (0, 160))
screen.blit(background, (0, 0))
pygame.display.flip()

def next(x, musicList):
pygame.mixer.music.load(musicList[x])
pygame.mixer.music.play()
x+=1

def GetSong(musicList, x):
if not pygame.mixer.music.get_busy():
pygame.mixer.music.load(musicList[x])
pygame.mixer.music.play()
else:
pygame.mixer.music.stop()
pygame.mixer.music.load(musicList[x])
pygame.mixer.music.play()

def Stop():
pygame.mixer.music.stop()
def Pause():
pygame.mixer.music.pause()
def Resume():
pygame.mixer.music.unpause()

while 1:
for event in pygame.event.get():
if event.type == KEYDOWN:
print event.key
inp=event.key
if inp==K_DOWN:#play/pause
if not playing:
GetSong(musicList, x)
playing=True
change=True
if paused:
Resume()
paused=False
else:
Pause()
paused=True
if inp==K_UP:#Stop
Stop()
playing=False
change=True
if inp==K_RIGHT:#Next
if x<len(musicList)-1:
x+=1
GetSong(musicList, x)
playing=True
else:
x=0
GetSong(musicList, x)
playing=True
change=True
if inp==K_LEFT:#Previous
if x>0:
x-=1
GetSong(musicList, x)
playing=True
else:
x=len(musicList)-1
GetSong(musicList, x)
playing=True
change=True
if inp==113:#quit
sys.exit()
elif not pygame.mixer.music.get_busy() and playing:
if x<len(musicList)-1:
x+=1
GetSong(musicList, x)
change=True
else:
playing=False
x=0
if change:
background.fill((250, 250, 250), (0, 80, 400, 20))
background.fill((250, 250, 250), (0, 130, 400, 20))
background.fill((250, 250, 250), (0, 180, 400, 20))
if playing:
font = pygame.font.Font(None, 18)
text = font.render(musicList[x], 1, (10, 10, 10))#current
if x>0:#previous
text1 = font.render(musicList[x-1], 1, (10, 10, 10))
else:
text1 = font.render(musicList[len(musicList)-1], 1, (10, 10, 10))
if x<len(musicList)-1:#next
text2 = font.render(musicList[x+1], 1, (10, 10, 10))
else:
text2 = font.render(musicList[0], 1, (10, 10, 10))
background.blit(text, (0, 80))
background.blit(text2, (0, 130))
background.blit(text1, (0, 180))
screen.blit(background, (0, 0))
pygame.display.flip()
change=False