Freeze if wished. Mangoes can be frozen. The skin will turn black but the flesh will stay in good condition (it will be just a little softer than prior to freezing). You can freeze either the entire mango or you can freeze chopped up pieces.
James, you need to do a little research on ASIO Direct Monitoring. It's a standard tha allows an ASIO host to enable hardware monitoring in an interface that supports it. This bypasses The A/D/A converters and is true, zero-latency direct monitoring.
3. Recording software (DAW) Your recording software should support ASIO recording (important), multi-track or multi-channel recording (also important). There are a lot of great options out there for recording software.