The Star Wars episode 2 soundtrack cd has key2audio v3 here in the Netherlands. My Plextor px-40ts, sees 2 sessions (1. audio session, 2. data session), but apparently some Toshiba drives see 3 sessions on a key2audio v3 disk... In your case you only see 1 session and that is OK, because there is only usefull data in the first session, that is: the audio part! The rest of the session are corrupted sessions with corrupted data... so you don't need/want the rest of the sessions when backing up this audio cd.