Hello - I am connecting my Ipad to a Behringer Xenyx 802S mixer with a splitter cable (3.5 mm to two TRS). My songs are all multitracks. In the audio routing setup, instrument tracks are set to left and click set to right. Both TRS plugs (right and left) into the mixer have the tracks mixed with the click, no separation. I would have expected the click to be in right plug only and the instruments without click in the left plug. Can you help me out? Thanks.