This workaround is OK, but still can be troublesome. For example, say the filter cutoff on the pad at the end of song 1 (and song state 1 in that song) was down to 30%, so not a lot of high-end. Then I switch to song state 2 which enables the audio file of the pad, just before I switch to song 2. Problem is, the audio file was saved with the pad maybe around 50% filter cutoff, and maybe even higher volume, so there’s this noticeable change in the sound.
Sigh. Other keyboardists on our team that use plain old Mainstage and their Apple computers have no problem with this, as it handles SST with ease. I wish we had the choice to use this in Cantabile.