I got GPO to work last night and was disappointed to find out that I could not get all the instruments I wanted playing at the same time. I just wanted someone more knowledgeable to help me figure out whether my computer is just not powerful enough to run GOP properly (Dell Dimension 8100 with P4 1.5 Ghz processor and 1024 MB of rambus memory), or whether I could tweak something to get the ensemble I\'d like to play from GPO. I used Bidule to set up two instances of the GPO player, each with its own instance of the Ambience reverb. In GPO instance one, I had 4 first violins, 3 second violins, and 1 viola. In GPO instance two, I had 1 cello, 1 bass, and 1 bassoon. I was trying to recreate a simple Haydn (\"chamber\") symphony (#28) with these 11 instruments. The sequencer was a very old version of Cakewalk, and I used Maple Tools to get the midi routed properly. There are only four parts in the score, so I assigned the 4 first violins to midi channel 1, the 3 second violins to midi channel 2, the viola to midi channel 3, and the cello, bass, and bassoon to midi channel 4. With this setup, I was unable to get all four parts in the score playing at once without some really nasty sputtering and choking sounds. Is the Ambience reverb that much of a CPU hog? Should I be putting each instance of GPO through the same instance of Ambience? Should I be doing something else to that I am not? If not, what perfomrance should I reasonably expect from my machine with GPO? Should I be shopping for a new computer?