I'm running the second output to a TV. I blew out the original Matrox G450 32meg card and replaced it with a 16 meg G450LE card. Both are "Ebay specials". Now I can't get the buffer below 256 samples without serious crackling, even in Winamp. I was running at 128 samples with the old card with very little crackling. More importantly, I just discovered that if I turn off the dualhead TV output I can drop down to 64 samples, something I could never do before. I like it - it really tightens up the sound of Akoustik piano.
The G450 ain't cuttin' it. Is there an AGP card that should allow me to have both a composite TV output and a 64 sample audio buffer?