Hi Paddy, as Jim mentioned, check out which driver type you're using. If you're using ASIO, you may have other software running that's using the sound driver - ASIO generally does not allow more than one program to use sound.

If you're using MME or Windows Audio, try switching from one to the other. And as rharv asked, what are you using for sound? Your computer's internal sound card, or an external audio interface?

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