Use the Coyote Wavetable synth, comes with recent versions of PGMusic products for just such an occasion.

That said, did you download the most recent drivers from Creative for your Audigy. The new drivers should make the PCI MIDI work, if they are available.

http://support.creative.com/kb/showarticle.aspx?sid=61105


Make your sound your own!
.. I do not work here, but the benefits are still awesome