Only records 1.5hrs of FM radio.

You want to schedule your recordings

I found a tool named streaming audio recorder., which can schedule you recording as below.

1. Detect the radio signal automatically.

2. set the "Starting time"

3. Set the "Duration" time.

4. After recording, help you turn off the computer.

it supports all popular streaming media protocols, HTTP, RTSP, MMS, MMSU, MMST, etc.

i am not sure this can help you . You can have a free trial.

mine usually needs me to stop it at the point I want to end it. that probably doesn't help you any, but see if you can work from there.