Mengoptimalkan aplikasi multimedia menggunakan K-lite codec. Apabila anda ingin meningkatkan kemampuan aplikasi multimedia dalam membaca file-file multimedia, maka anda dapat menggunakan codec gratisan berikut. Cukup install maka secara otomatis aplikasi windows media player lebih maksimal dalam mengenali file-file fomat video dan audio. 
Pada saat artikel ini saya buat telah ada release K-Lite Mega Codec Pack 4.4.2     
Rincian feature dari K-Lite Mega Codec Pack 4.4.2 :     
• Player:     
- Media Player Classic [version 6.4.9.1 rev. 86]     
- Media Player Classic Home Cinema [version 1.1.904]     
• ffdshow:     
- ffdshow [revision 2364]     
- ffdshow VFW interface     
- extra plugins     
• DirectShow video decoding filters:     
- XviD [version 1.2.0 build 2008-01-10]     
- DivX [version 6.8.5]     
- On2 VP6 [version 6.4.2.0]     
- On2 VP7 [version 7.0.10.0]     
- MPEG-2 (Cyberlink) [version 8.1.0.1608]     
- MPEG-2 (Gabest) [version 1.0.0.4]     
- MPEG-1 (MainConcept) [version 1.0.0.78]     
• DirectShow audio decoding filters:     
- AC3/DTS/LPCM (AC3Filter) [version 1.51a]     
- Vorbis (CoreVorbis) [version 1.1.0.79]     
- AAC (MONOGRAM) [version 0.9.5.0]     
• DirectShow audio parsers:     
- MusePack (MONOGRAM) [version 0.9.1.2 | 0.3.1.2]     
- WavPack (CoreWavPack) [version 1.1.1]     
- FLAC (madFLAC) [version 1.8]     
- Monkey's Audio (DCoder) [version 1.0]     
- OptimFROG (RadLight) [version 1.0.0.1]     
- DC-Bass Source [version 1.2.0]     
- AC3/DTS Source (AC3File) [version 0.5b]     
- AMR (MONOGRAM) [version 1.0.1.0]     
• DirectShow source filters:     
- AVI splitter (Gabest) [version 1.0.0.9]     
- AVI splitter (Haali Media Splitter) [version 1.8.122.18]     
- MP4 splitter (Haali Media Splitter) [version 1.8.122.18]     
- MP4 splitter (Gabest) [version 1.0.0.4]     
- Matroska splitter (Haali Media Splitter) [version 1.8.122.18]     
- Matroska splitter (Gabest) [version 1.0.3.0]     
- Ogg splitter (Haali Media Splitter) [version 1.8.122.18]     
- Ogg splitter (Gabest) [version 1.0.0.1]     
- MPEG PS/TS splitter (Gabest) [version 1.0.0.4]     
- MPEG PS/TS splitter (Haali Media Splitter) [version 1.8.122.18]     
- FLV splitter (Gabest) [version 1.0.0.5]     
- CDXA Reader (Gabest) [version 1.0.0.2]     
• DirectShow subtitle filter:     
- DirectVobSub (a.k.a. VSFilter) [version 2.39]     
- DirectVobSub (a.k.a. VSFilter) [version 2.33]     
• Other filters:     
- Haali Video Renderer [version 1.8.122.18]     
• VFW video codecs:     
- XviD [version 1.2.0 build 2008-01-10]     
- DivX [version 6.8.5]     
- x264 [revision 1032]     
- On2 VP6 [version 6.4.2.0]     
- On2 VP7 [version 7.0.10.0]     
- Intel Indeo 4 [version 4.51.16.2]     
- Intel Indeo 5 [version 5.2562.15.54]     
- Intel I.263 [version 2.55.1.16]     
- huffyuv [version 2.1.1 CCE Patch 0.2.5]     
- YV12 (Helix) [version 1.2]     
• ACM audio codecs:     
- MP3 (Fraunhofer) [version 3.4.0.0]     
- MP3 (LAME) [version 3.98.2]     
- AC3ACM [version 1.4]     
- Vorbis [version 0.0.3.6]     
- DivX ;) Audio [version 4.2.0.0]     
• Real Alternative:     
- RealMedia codecs [version 6.0.14.826]     
- RealMedia plugin for Internet Explorer     
- RealMedia plugin for Firefox/Mozilla/Netscape/Opera/Chrome     
- RealMedia DirectShow splitter [version 1.0.1.2]     
• Tools:     
- Codec Tweak Tool [version 2.2.9]     
- GSpot Codec Information Appliance [version 2.70a]     
- MediaInfo Lite [version 0.7.7.8]     
- VobSubStrip [version 0.11]     
- GraphStudio [0.3.0.0]     
- Haali Muxer     
- FourCC Changer     
- Bitrate Calculator     
Untuk mendownload bisa gunakan link berikut:     
http://www.free-codecs.com/k_lite_Mega_codec_pack_download.htm