Thanks guys for the quick repsonses. Sony "customer support" tried to tell me that reinstalling SSv.3.3 with my firewall off and antivirus disabled would fix the problem. I told the technician that I highly doubt that it would fix my errors, but I decided to try it anyway. Of course, they were wrong. I gave up trying to get help from Sony. So then, as you all suggested, I just downloaded DBpoweramp and converted the tracks to .wav and finally got them running as ATRACs on Sonic Stage. It still isn't perfect, but thanks for the workaround guys. My party on Saturday night thanks you too.