Tip one is about what is the best practice for naming projects and assets in Final Cut Pro. Applecare suggests using letters instead of symbols. Something I try to stay away in general when naming any file. Symbols won't necessarily not work as titles but it will complicate matters when shared or changing platforms.Tip two involves canceling FCP audio renders as it may change the render state of audio tracks. Meaning, a portion of audio content which previously was rendered, may afterwards be unrendered. The workaround is to simply choose Sequence > Render Selection > Audio. Instead of Render All or whatever.
