As you can see, I removed the speaker and made an enclosure from an old minidisk adapter (kept the Sony logo) with the 'stop' button from a minidisk remote, and super-glued it all together. I probably won't do it this way again, since its pretty tight in that box for the 3 jacks, the keyboard tracking switch and the trim pot (which you can see in the front). All the required resistors are "floating" inside. I did use some heat shrink to wrap 'em up. These mods are exactly as shown here:
This is well worth the work to get some CV and Gate in there.