KMPlayer

KMPlayer Version 4.2.2.5 Free

A media player for playing movies and songs, supporting a wide range of formats

Your parents had had it simple. All they had was a device called a "Walkman", into which they'd insert a wallet sized something called a "cassette", in order to play music, and which more likely than not had required them to find a screwdriver, a few rubber bands, and a lot of patience, in order to fix the tune and manage going on with a bit shorter version of it.
Unfortunately (or fortunately), you live in a digital world, where there's no chance for the magnet to erase, but where there are weird words that for your parents, sound like bankrupted photography companies, such as codecs.
KM PLAYER, or in its abbreviated name, KMP, tries to save users from the headaches that usually accompany the use of older players
which don’t support common formats. It comes with a built in package of codecs, which means you'll be able to play a whole lot of movie and song types, without having to separately download additional codec packages (these are the files that explain to your PC and media player how to play your media files).
The player's greatest advantages are its compact size and the fact that it consumes very little system resources, enabling even older PCs to play movies without overburdening them due to excessive strain on their resources.
As mentioned, it supports common formats such as AC3, DTS, MPEG1, 2, AAC, WMA 7, 8, and OGG files, but it also supports less common formats.
Supported video formats:
MPEG-1/2
DIVX 1/2/3
MPEG-4 ASP, DivX 4/5/6, XviD, 3ivX D4
H.261
H.263 / H.263i
H.264 / MPEG-4 AVC
Cinepak
Theora
Dirac / VC-2
MJPEG A/B
WMV 1/2
WMV 3 / WMV-9 / VC-1
Sorenson 1/3 Quicktime
DV Digital Video
On2 VP3/VP5/VP6
Indeo Video v3 IV32
Real Video 1/2
Real Video 3/4
Supported audio formats:
MPEG Layer 1/2
MP3 - MPEG Layer 3
AAC - MPEG-4 part3
Vorbis
AC3 - A/52 Dolby Digital
E-AC-3 Dolby Digital Plus
MLP / TrueHD">3
DTS
WMA 1/2
WMA 3
FLAC
ALAC
Speex
Musepack / MPC
ATRAC 3
Wavpack
Mod .s3m, .it, .mod
TrueAudio TTA
APE Monkey Audio
Real Audio
AMR 3GPP
MIDI
LPCM
ADPCM
QCELP
DV Audio
QDM2/QDMC QuickTime
MACE
Users come first