For the music, you go onto the card you drew the thing on, make a new thing, just a drawing one or wtv, go to the thing thats to the right of the movement thing. Do "when this is created" and then "play a sound", and when you do that switch it to wtv you need, then you can like, import videos or like record stuff for the sound (I usually use TikTok videos but idk Abt u), when transferring to a new card, put "stop all sound" on the next button so sounds don't overlap

Tip just remix a deck and import the blueprint/drawing /music sorry if i look mean: <