I am interested as well. It seems you can filter by “all track” and then by artist to get all tracks for a particular artist, which you can then play through in their entirety. However, the same functionality does not work for filter by genre. In this case you can only get a list of albums by genre and you can only play them one at a time.
I would like to request the hub have the ability to display all tracks of a particular genre, regardless of artist or album, and allow the user to play or shuffle through the entire set.
While on the topic of genre, I also notice that the hub does not transfer the genre category information well from itunes. It has reclassified a number of albums and tracks into different genres from the ones I set in itunes.
I hope we can get this minor fix in an upcoming firmware release.