being able to apply the same genre to whole album
so if you select a genre for one track in the album, there should be an option to apply it to the entire album.
This sounds like a bug; if the tracks are grouped in the bliss album interface they should all be changed. Can you send me a debug archive? See http://www.blisshq.com/support/reporting-problems.html
You can also change the genre by clicking on it in the album detail page.