I have started adding background sound into TW4 projects. It works fine except for the fact that it slows down the loading of the initial image by about 10-15 seconds.
I would like to see the sound files loaded after the initial pano is in motion.
Hmm - how big are the image files? My sound files www.actualeducation.co.uk/demo are loaded with each scene, rather than a background file, but they should still work ok...
I try to keep the music track as short as possible. 60 seconds if it is not a seamless loop. I also compress music to 96k and voice to as low as 56k. This really helps with the loading time.
I might want to clarify a comment I made earlier in that my "96kmusic and 56kvoice" rule is the bitrate and not the overall file size of the mp3s. I hope that helps.