Mizery_Made. Here's a beta with that editable home page stuff.
Install Script v2.30 Beta (Added custom URLs) Open zip, and just double click the install file.
Haven't had enough time to test it in all sorts of situations, but it's here if you want to give it a go.
If you right click an Album Artist's name, in the node, you'll see 'Artist's Homepage. Click it, and you'll get a chance to write a custom homepage for this Artist, and it will be used instead of the Google Lucky feature.
The info is stored in the Comment field of the Artist, that is not commonly used. You only find it by right clicking in the Artists node, > properties. As a rule this home page should start with http:// as the script expect that before being able to use it instead of the Google feature.
The url is stored as the first line in the artists comment field. Something to try out anyways... I have to get back to gardening....
I know at this point that the dialog where you can put in the URL can need some refinement.