I GOT IT!!! The problem was really an inter-codec-missunderstanding, to give it a name. Following part of the instructions from Kurisu, I removed the folders and registry entries, but did not install SP2... but just because I got errors... Anyway, the real results came after this. I went to download.com and searched for atrac3. There were two results: One program that claims to be able to convert (but it´s not true) and a codec pack. Sorry, Kurisu, but this codec pack worked my miracle. I reinstalled SS 1.5 (bundled with my MD) and it converted perfectly at the first attempt. I have not tried MP3, DIVX or DVDs, but for that, I have my plasma screen... Anyway, I hope this will help someone with the same issues I had. Enjoy.