I thought of a cool tag to share space with this one. Since you're likely to have more than 255 albums, this will need more than one byte. Since you're likely NOT to have more than 65k, it can use less than 16bits. So, how about setting aside a few bits for a Media-Type ID?
Then you can identify whether something is an "Album" or a "CD-Single" or "8-Track" or "Live Bootleg" or "Audio-Book" etc... This would then allow filtering the soup views. So if you want to look only at CD-Singles, you can. I would find this VERY useful. And I don't even have any audio books yet...
Bruno