This is a charade - multiple separate clues are combined to build the answer piece by piece
'seen around' suggests SEVEN goes around something. 'half ten' gives you A (first half of 'ten'). 'with commentary for audience' indicates a homophone - listen for a word meaning 'flank' or 'edge'
Answer: SEVEN-A-SIDE | SEVEN goes 'around' A (half of 'ten'), plus SIDE (homophone of 'sighed' = commentary for audience). Seven-a-side is a form of football