@ Mark Blue
Thank you very much! But I'm no so expert in codecs, skins and player things, or at least not more than anyone who plays with the settings, or try to solve his (or other ones) problems.
You just need some patience and a little bit of memory. Many times I reutilize BSPeter or adicoto's suggestions to answer to other users, so I should say thank you to them too, since they helped me to help other users a lot (just like BSPeter's
Help2Help post says)!
Anyway, thank you again, it's my pleasure to help anyone who needs my help!
Bye