Amazon.com has an Iogear 2 Port USB Audio KVM W/ PS/2 KB (GCS712U) for $11.91 after $20 rebate with Free Shipping.
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- The smallest 2-port KVM switch available with audio support n
- Use one keyboard, monitor and mouse to control two computers n
- Share multimedia speakers among two computers n
- 6 long molded-in cables to simplify setup n
- Support for Microsoft Intellimouse, Logitech FirstMouse , MouseMan , and most PS/2 mice