[Plugin: Just Custom Fields] Is it possible

I need two new fields added to this custom theme for posting music releases, i was hoping this plug in might be able to do it.

I would like Remixers & Release Date added to the current list of artist, genre and type.

Is this possible with this plug in ?

http://www.zippedrecords.com/?cat=3

Thanks

Mark

http://ww.wp.xz.cn/extend/plugins/just-custom-fields/