Wayne hasn't got with me yet on the problem with Street Beat Class and the Vista controversy so I did some research myself.
What I found out was you can run Term-Lab in XP mode on Vista.
Here is what I did:
Click Start (bottom left corner)
Click Help & Support
Type in Search: Force Compatibility
Then Run the: Start the Program Compatibility Wizard
Change to XP mode
This should fix it, check it out and let me know. This is only for Vista Users. Also when you test this do a run in SPL Mode then in USACi mode.
Let me know, crossing my fingers.