--Mounting of microphone and speakers complete.  Mic is mounted on left rear corner of rover.  Speakers (the smaller, separate pair measuring approx. 3in x 2in each) are mounted underneath the rover, between the front and middle wheels, angled out towards the sides of the rover.  Should get a natural echo effect off the ground from this positioning.  Angle of the speakers is somewhat variable due to hinges on the backs of the speakers.
--Installed Arduino IDE (arduino-1.0.5-linux32.tgz from www.arduino.cc)and Teensyduino (teensyduino.32bit from http://www.pjrc.com/teensy/td_download.html) on rover.  Also tried the following:
	    #apt-get install arduino-core arduino openjdk-7-jre openjdk-7-jdk
	    #cd /usr/lib/jvm/java-7-openjdk-armhf/jre/lib/arm
	    #ln -s jamvm/libjvm.so .
	    #apt-get purge openjdk-7-* (looks like it automatically installs openjdk-6)
	    #apt-get install openjdk-6-jdk openjdk-6-*
Was unable to get this version of arduino to run, always throwing the error 'java.lang.UnsatisfiedLinkError: /root/arduino-1.0.5/lib/librxtxSerial.so: /root/arduino-1.0.5/lib/librxtxSerial.so: cannot open shared object file: No such file or directory (Possible cause: can't load IA 32-bit .so on a ARM-bit platform) thrown while loading gnu.io.RXTXCommDriver'.  Believe this is a dead end because the libraries are not built for ARM.
However, was able to get the packaged version to run.
Also able to get the UDOO version for ARM (v1.5.4) downloaded from http://www.udoo.org/install-the-arduino-ide-hfp/ to run as well.
The teensyduino.32bit was also unable to run, and I found out after some research that it also is not built for ARM.
Will try to manually copy the files that appear to be installed by the Teensyduino installer to see if I can hack a working Teensy programming environment together on the Gumstix.
Copied 49-teensy.rules to /etc/udev/rules.d