Thank u 4 your fast reply, Fenor
I succeded installing, as u suggested, Windows Media Player 9. It does work.
I'm quite satisfied. Indeed I was referring not to the last one (wmplayer.exe), but to the very lighter mplayer2.exe. I fear this one is missing or malfunctioning on my PC. In fact, after installing the "big" version, clicking directly on the clip file, the "small" one started (there was the "open with" feature setted that way) but it didn't work.
In other words, is there a way to get back mlpayer2.exe working?
If not, don't worry.
Excuse me if I profit by you asking another question.
After installing & uninstalling, yesterday, several video splitting apps, and after the problem with the player, I noticed that my PC is behaving not right normally. It seems to be slowed down.
A strange thing: as I write in a post on a forum (like this one now), if I move the cursor along a row of text (holding the key pressed) it moves very very slowly, char by char, as before it was quickly sliding along the words.
What do u think about?
I fear my OS registry isn't ok now. Do u think I'd "clean it? If yes, how?
Excuse my poor English (I'm Italian)
Thank u again