I was building a new game in Monogame when I realized that it didn't have XACT support like XNA did. I was wondering if anyone knew another framework that could be used with or instead of MonoGame (preferably with) to get the ability to load XACT projects into the game?
XACT itself is only supported on platforms that already support the official XNA framework (specifically Windows Desktop and Xbox; and not WP7). I'm not aware of any re-implementations of XACT for other platforms.
So your choices are basically to use the official XNA framework (if you only need Windows/Xbox support). Or select another audio technology (possibly
SoundEffect in XNA/MonoGame, possibly something else).
Also keep in mind that XACT is no longer "supported" on Windows (similar to XNA - it's not broken - it will still work if you choose to use it).