I had this same problem. I’ve been using the IMA 4:1 audio codec, which works and sounds okay to me. The YouTube site says they prefer audio using mp3, but I haven’t figured out a convenient way to do that exporting from Motion. I’d be curious to hear what other people are using with good results.
Thanks, that was very helpful. I already had a seperate bin for the graphics and titles, and it didn’t occur to me to have one for the old sequences. I’m going to do that right now.