It seemed like it was creating its library on-the-fly from the filesystem, rather than caching into a local database of some kind, which with 5500-odd files is always going to be a slow business. Irritatingly slow, I found.

However, I've downloaded the explorer-plugin thing that Tony (ynot) mentioned, which sounds like it may work better for me, especially since all my music is arranged in artist/album directories.

Bryan.