Hi, I have Samsung galaxy s4 mini i9195 and I tested some formats and stuff using the existing Apps for playing them. MKV and AVI play but have no sound. Here comes the problem, while MP4 works fine since it uses MP3 codec, the MKV from what I saw on the PC - it uses AC3 for audio codec, the AVI I have even personal records use MS ADPCM (or IMA ADPCM) for audio codec. I don't want to convert every single avi or mkv I use in the future.. especially since vids may all come in different conversions. Is there some codec pack that can read the AC3, MS ADPCM/IMA ADPCM like the way you install a codec pack like ffdshow on a PC to play various codecs. It could be a codec pack or a player that supports them?