Songs not showing within their album

I’ve just finished filling my new Clip, using Winamp to transfer my songs. All went OK, except for a few songs, by a couple of artists, which have all gone into an album titled “Unknown” rather than their proper album (other tracks from those albums have gone on correctly). So, I can’t get to them by going through the Artists list, I have to go through the Albums list and select “Unknown” and there they are, in fact the songs show up as a filename-type name with track numbers and hypens, rather than just the song name. If I browse my Clip through Winamp and even Windows Explorer, they all show up in the right place, just not on the Clip itself?

See my post here.

(ignore the first sentence, you’ve already discovered the info there for yourself)