QUOTE
Winamp doesn't have sample accurate seeking for MP3 files, on long VBR MP3s there are huge seeking accuracy problems.
Absolutely right Case, Winamp was the problem.
QUOTE
foobar I believe
Absolutely right _Shorty, I used foobar and everything was ok, all the songs started from the exact start time.
Thank you so much for all your answers.
Greetings