1. Make sure PortA is configured as Digital I/O. The sound command will not work if it's configured as AtoD inputs.

2. Try another frequency, 127 is the highest (10KHz). Try something lower.

3. Try another pin on another Port (PortB maybe).

4. Test the speaker(s) by putting another sound trough them (like a radio). Just to make SURE they work.

Jim