Hi
Well I guess it depends what you have available.
If you have a keyboard with basic gm midi sounds try sending to that as an external midi sound generator and listen to them there.
If you want to stay just within the pc (the advantage here is the ability to direct render within the program) try one of the gm midi compatible Vsti like my XG lite Vsti if you like Yamaha type sounds ,and if you download and install my pat file for this you will also be able to access the xg higher bank voices.
Link to XG vsti and patfile from my web site:
http://mikesmusic.byethost16.com/my_technical_articles2.html#XG_vstIf you like Roland type voices try the free 64 bit TTS1 available if you download the
Free Cakewalk Daw by band lab the later assumes you are running 64 bit BIAB.
There are other possibilities like sound font players etc but try a couple of the above first.
At the very least use the Coyote wave table Dxi from Biab.
Have fun
Mike