Hallo! Lokking for help for my 2d charecter running sound! i have goten about this far and i am stuck the sound play for running one and the stops. Looking for help!!
Here’s a tutorial 
Oh and btw, if that’s an environment sound rather than a footstep sound (which I think is the case), you can simply open up your asset and tick the Loop checkbox under the Sound section. Once that’s done, you can use the Spawn Sound 2D node after the Started pin of your input action node, and then place the Set Active node after your desired condition, for example, the Completed pin of your IA node. Keep the New Active checkbox inside the node unticked and connect the Return Value pin of the Spawn Sound 2D node into the Target pin of the Set Active node. Alternatively, you can use the Fade Out node in place of the Set Active node but make sure to connect it’s Target pin as well.
Hope these help!