1. Multiple Outputs (and Auxiliary Channels) EXS24 and DFH Superior, for example, have multi-out capability. The process of setting up Auxiliary Channels in the Environment in order to apply processing to the various sounds (such as EQ to a kick drum and Reverb to a snare) is a process that forces me to seek instruction again and again. Now that Logic 8 doesn't seem to acknowledge the Auxiliary channels I saved as an Autoload, I'm kind of back to square one. 2. Multi-timbral Instruments Plug-ins like Native Instruments' Kontakt are multi-timbral, meaning a single instance of the plug-in can host more than one instrument. However, MIDI tracks need to be set up in such a way that each plays a different instrument within the multi-timbral plug-in. This, at least in Logic Pro 7, required some routing in the Environment. This process is somewhat opposite of the 3-guitars tutorial, in that rather than having one MIDI performance play multiple instruments, there'd be multiple MIDI tracks playing various instruments of a single plug-in. Hope this subject may be useful for people. Thanks.