I am putting together a musicgame. I have different musicfiles linked and then You can choose of five different instruments ( 3 each ) and do a tune of your own. ( I am working on being able to save this so a xml-file so you can import Your tune. )

To be able to make more of a melody it would be nice to have different part of a tune ( intro, chorus, bridge etc. ). I can make the individual parts but I dont know how I put these part in a timeline, so the intro starts on frame 1 and the chorus on frame 52. Or is it a way to say that this sound will start in 52 secounds.

One ideas if of course to have all musicfiles 30 secounds long ( if the tune should be 30 secounds ) and the add silence on the parts where the other parts should be.

Any ideas on how to solve this best?