I’d be grateful for some help. A student has installed Cubase Essentials 5.1.1 on a Windows XP machine, connected to a Lexicon Alpha interface. When he records, an odd, modulated noise is produced, though the waveform looks fine. The odd things are:- 1. Recording with Audacity is fine, and 2. as soon as Cubase is started not only are the recordings unusable but Windows own system sounds are similarly distorted. If he reboots, the system sounds return to normal and decent recordings can be made through Audacity.