If you want the whole album to play then search for the album and not the song title. The database brings back exactly what you search for. If you search for the title "hey" it will bring back (for example):
Pink Floyd - Hey You
Jimi Hendrix - Hey Joe
No Doubt - Hey Baby
Outkast - Hey Ya
Those are the songs that will currently be in the "playlist" if you will. It's not possible (that I know of) to do what you want. It will just play those results.
Now I think it would be sweet if you can click on one of those songs or something to go to the whole album or all the songs by that artist...