P317 4-Tel 317 Fri 4 Oct C4 21:51:01    Preview    EUROTRASH   23.10-23.40 Tonight Antoine Des Caunes delves into the dustbin of European culture in anothjr attempt to find the weird and wondjrful on the continent. Once again, it falls to the smooth- talking Frenchman to break in a new celebrity guest co-presenter. This week's pot pourri includes a took at the revival of the British erotic film industry and a visit to a teather- slapping lederhosen festival.  NICAM stereo Next preview C4 Tomorrow Science Films