My new "Numark PT-01 USB" turntable/vinyl converter actually spins 35.3 RPM instead of 33.3. Notes sound slightly sharp. Is there a good software to fix this?
Just about any audio editing software should be able to do this for you. You simply need a "stretch" or "speed" adjustment. If you don't know of any software, Audacity is a popular free option. It's probably overkill for your needs, but should allow you to stretch the audio out to slow it down.