I have recently installed Asset as a replacement for Twonky (due to too many album cover issues with Twonky). All seems to work well with 1 exception. When using Twonky I had a number of albums with multiple artists. In Twonky they showed up under Various Artists, but with Asset each song show up under every individual artists. After checking this forum I found the solution to add the artist to the song title/description and make all the artists into "Various Artists" They now all show up under Various Artists and no longer as individual songs under the artists.
However, in a number of occasions, the "Multiple Artists" album cover shows up in the "All Artists" view for the particular artist , but when clicking through to the artists, that album/song (quite rightly) is not there. I did clean the album cover cache, but that did not resolve the problem. It is a minor issue, but I would prefer to see in the artists view an album that actually belongs to that artists