ITunes Problem: Can't edit songs any longer in Leopard?!

[mileslong]

I was trying to change the artist name spelling in one of my songs in Itunes and just noticed that it won't let me edit anything in my songs anymore since i installed leopard! has anyone else had this problem? anyone know how to correct this?

Model Name: PowerBook G4 17"
Model Identifier: PowerBook5,7
Processor Name: PowerPC G4 (1.2)
Processor Speed: 1.67 GHz
Number Of CPUs: 1
L2 Cache (per CPU): 512 KB
Memory: 1 GB
Bus Speed: 167 MHz
Boot ROM Version: 4.9.1f1

 

[mileslong]

well i just checked again and i see that it will let me edit protected music purchased from itunes but not any of my other music that is one there. what exactly is this bullcrap!!!!!!!!!!!!!!