[Muine] groups in muine

[Nic Pullan <nicpullan optusnet com au>]

i have a suggestion to append to the proposal here
http://www.jbaayen.dds.nl/proposal.html about groups. I think its
important that songs can belong to more than 1 group, for example in the
genre field of some of my songs are as follows: 
track1 "Trance Melodic Vocal"
track2 "Hard Trance"  
track3 "Vocal house"
track4 "Hard House"

i would like to see these songs belong to the different groups Trance,
Melodic, Vocal, Hard and house. If i wanted to listen to the trance
group i would get tracks 1 and 2. If i wanted to listen to the vocal
group i would get tracks 1 and 3. If i wanted to listen to songs within
both the hard and the house groups, i would only get track 2.

what do you think?

Nic