E-Prime 2.0 introduces the ability to choose the underlying Sound API used during an experiment session.
Use of DirectSound for machines running Windows Vista, Window 7 (or later) is not recommended for paradigms that require sound latencies under 30ms.
This topic applies to:
This topic introduced in E-Prime 220.127.116.11 or later
INFO: Sound Latency - Windows Vista / Windows 7 (and beyond) 
INFO: Use of SoundTester to determine machine compatibility with ASIO or Core Audio/WASAPI