iTunes upgrade don't work rite

I upgraded itunes to 10.5.2 on a g5. It sucks. How do I degrade to former version or should I just appdelete it? I've got my music on a separate HD. I can't control the volume at all. Can't get album info. Itunes moves my music to a music folder inside my music folder. I delete it, it adds it back. I messed with the preferences, but it doesn't help. Has anyone else given up on iTunes on powermacs? I'm about to. How do you get info for a whole album to change volume or anything else? On earlier versions you could highlight the album and get info with the keyboard, but no longer will it let you do that ( at least I haven't figured out how ). On 10.5.2, I can't access albums at all. Can someone tell me how? Thanks.