First Trial of Multiple Library Support in iTunes 7

I went round and round in my head looking for the best way to use an alternative iTunes library. (iTunes 7 lets you keep multiple libraries under one account, and choose the library at startup.)

In the end, the most practical turned out to be a simple "scratch" library to use for holding small bunches of songs while editing their song info. You know how iTunes can freeze for several seconds every time you make a tiny edit to a library with thousands of songs? Well, transfer a couple of dozen songs that need the same fixes into a new, empty library, and you can do those edits in no time at all. Look for the writeup here in a day or so.