Hi Gregory,
The C5000 Teaching ROM comes to mind - http://e2e.ti.com/group/universityprogram/educators/w/wiki/2040.c5000-teaching-rom.aspx
It includes several labs and slides for audio processing like audio band pass filters, etc. You can study the slides and projects in CCS without the eZdsp.
When I think of control systems I think of C2000 - good for PID, motor control, PWM, etc.
Are you filtering audio? What control outputs are required?
Hope this helps,
Mark