First you need files in .wav format (probably best to use Audacity to export .mp3 files to .wav), then just create a folder in CONTENT and import your files there.
Then you have to right click each file and select CREATE CUE (similar to extractin/creating sprites and adding paper 2D Texture settings).
Once you have that you can use those files you can use them in blueprints (such as the level blueprint, triggerbox stuff and so on) .
^Example of level blueprint with sound/music attached to triggerbox
As for background music itself you can just literally drag the audio cue to the world and it will play as soon as the game/world starts... However it plays only once so you gotta doubleclick the audio cue and in it's blueprint add a LOOP function like so:
Oh and I just found out that the looping can be actually done within the WAVE PLAYER itself
First you need files in .wav format (probably best to use Audacity to export .mp3 files to .wav), then just create a folder in CONTENT and import your files there.
Then you have to right click each file and select CREATE CUE (similar to extractin/creating sprites and adding paper 2D Texture settings).
Once you have that you can use those files you can use them in blueprints (such as the level blueprint, triggerbox stuff and so on) .
As for background music itself you can just literally drag the audio cue to the world and it will play as soon as the game/world starts... However it plays only once so you gotta doubleclick the audio cue and in it's blueprint add a LOOP function like so:
Oh and I just found out that the looping can be actually done within the WAVE PLAYER itself