_,,,^..^,,,_ said:

If only someone could (and would) fix all those soundtracks... at the end, I could think to release an OUT 3.0! (^^,)

You can't fix that. You can't "un-mix" stuff from a soundtrack. Unfortunately all those tracks are stuck like that, I'm sad to say.

About the subtitles, maybe I did something wrong, but the only one that seemed to work was the second one, the dubbing transcript.

Don't know... I've just played the file with Media Player Classic, and all the four subtitles (english and italian, forced and full) work well, along with the two soundtracks... what software are you using to play the file?

Windows Media Player and VLC. On the former I can turn them on, but I can't select the track, and the first one doesn't work. On the latter I can see all the sub tracks, but as I said only the second one works.