Performance

You can improve the performance of the driver by resetting its priority to high priority  from the documents submenu.  This invokes a root-owned setuid program  enableFixedPolicy which is included in the app.wrapper for this application to raise the priority of the driver from 10 to 18.  It will be harder to interrupt, but its priority will not degrade and it will not be as sucseptible to interruptions from other processes.  It will also make the machine a more unfriendly place for other users and for network applications.  The priority can be reset by selecting the  Normal Priority option from the menu and restarting the driver.  (It should be resettable without starting the driver but for some reason it isn't.)

If you are installing this application and you want to be able to use this option you have to become root and say

chown root enableFixedPolicy
chmod 4755 enableFixedPolicy

in the rt.app directory.

This program will not work well if it is reading files across a network or from optical disk.  In these cases the maximum throughput will be more limited and it will be harder to play without interruptions and skips.

In general a mix will work better the second time you try it.  The first time it runs there may be a lot of swapfile activity which slows it down.  Often just running the first 10 seconds or so of a mix, and then hitting "stop", will make subsequent mixes work better.