Recreating iTunes library from a .itdb file?
You never said whether your hard drive is dead. If it's not, pull it out and use it as an external drive (with the help of a SATA-Firewire adapter). Use Migration Assistant.app to copy over your music, or just copy your iTunes folder (e.g., "~/Music/iTunes Media/").

Then, the next time open up iTunes, hold down alt as you tell it to open. In the following dialog box, select the new location of your iTunes Media folder.



My apologies if your hard drive is legitimately dead. I don't yet have privileges to comment on a question, which would have been a more appropriate vector for asking you to clarify the state of your hard drive.