Casino game let into the right track (8)
I believe the answer is:
roulette
'casino game' is the definition.
(I know that Roulette is a type of casino game)
'let into the right track' is the wordplay.
'into' is an insertion indicator.
'the right track' becomes 'route' (route to a destination).
'let' placed inside 'route' is 'ROULETTE'.
(Other definitions for roulette that I've seen before include "Half of 1D [GAME OR BIRD]" , "gambling business" , "risky venture" , "French gambling" , "Gambling game with spinning wheel and ball" .)