Hello Guys, thanks for your answers. Grenert, my files are coming from audio CDs that i've put in sonic stage in atrac format. Obviousely, even if i've created them in atrac64 bits, Sonic stage seems to need this convertion phase even if the file is already in the right format. And i'm at the same stage than you for, ST hang up just before burning the CD. For Sonic stage 3.4, i can find any more the install files. Is it worth to come back to this version regarding version 4.3 ?? How ever has the ATRAC files i'm trying to put on my CD are coming from personal audio CD, i see on the properties of each files that i've got an illimited number of time the rights to transfert them to an Atrac CD. More over, i've tried with a new audio CD that ST did not know about it (so the transfert count was 0 for all theses files) but unfortunately, ST refuses to put this album on my atrac cd telling me that i've got no more the rights to transfert it (even if it was the first time i tried !!!!) Any way i'm going to try the reset of the library and go for that www.atraclife.com and we'll see. Thanks guys, Olwefin