[Banshee-List] Are better Last.fm filters possible?

["B. Joshua Rosen" <bjrosen polybus com>]

Is it possible to create better filters for the Last.FM channels? Right
now the only filter that seems to be useful is Similar and that's
limited to a single item which makes it hard to narrow things down. For
example suppose I'm interested in pre-1940 sopranos. Currently I could
use Similar to Luisa Tetrazzini. That will get me mostly opera but it
will be a mix of modern and older recordings. If you could put multiple
criteria on a channel you could get better results. For example if you
had Similar to Luisa Tetrazzini + Rosa Ponselle it might do a better job
of narrowing it down to old recordings. If you wanted sopranos in
general you might add a few more, i.e. + Maria Callas + Anna Netrebko.
To summarize I'd like to request that you add the following to the
Last.FM channel definitions,

Multiple filters

Exact Match, i.e. if I want Maria Callas only not any opera recording.

Date range, if I want recordings from the 1950s it would be nice to be
able to specify that.

Also it would be nice if Tags worked (I'm guessing this is a Last.FM
issue not a Banshee problem). A Tag of Opera ought to get opera not
Broadway musicals, if you wanted Broadway then you would have used the
Tag Broadway.

Thanks,

Josh