The Secret Sound is played Monday to Thursday after 3pm in James' show.  Listen out for the sound, call in and have a guess, if you speak to James and guess correct you could win the cash, which accumulates each day. 
Competition terms and conditions apply.

Wrong guesses so far are:

A knife coming in/out of a knife block.

An automatic paper towel dispenser.

Car boot opening and closing

An empty plastic bottle being thrown into a recycling bin

Cutlery being loaded into a dishwasher 

A bread bin opening and closing

Royal Mail post box opening and closing - for the letters and parcels

Opening a washing machine drawer (Where you put the powder in)

An air fryer drawer opening and closing

A swing bin

Using a coffee machine

A wooden lid being put on something

A cat flap

DVD/CD player opening and closing

A vacuum Sealer

A guillotine (paper or card)

Toilet lid opening and closing

Using a petrol pump

Printer drawer opening and closing

Seat belt going in the clip

Washing machine drum

Tape measure recoiling

A glove box opening and closing