Scott,
I assume you are looking at the TI Resource Explorer where there is the One-click Projects and also tabs for viewing C and Assembly source files. The One-click Projects use only the C sources, but if you want to create a project that uses only the assembler source, you can do the following:
- Go to menu Project->New CCS Project
- Fill in the fields and for "Project Templates and examples", select "Empty Assembly-only Project"
- The project will be created with a main.asm
- Delete main.asm and copy over the desired .asm file from the examples to the project
- Build the project