If you are having trouble opening a song with a ton of XS-1's, first try moving your sound-font directory. If that still doesn't work (and if you are on XP), hit ctrl+alt+delete to monitor your cpu usage. After loading each sound-font, the percentage of usage fluctuates to around 100%. Just wait until that percentage drops and then load the next sound-font. No more crashing with XS-1 songs! - solarian