I thought i would ask this directly, since the search gives a lot of answers but not all in once and i'm kind of tired of searching these things. So if you have worked with custom sounds on Valve games, you understand my point. Especially with L4D series related in was pain in the butt. Looking for answers for these questions: 1. If I add custom sound to TF2, i assume it is possible without precaching and such? If precaching is required, what are the idiot proof steps to not fail in adding sound? 2. What format does it need to be in? MP3, wav? Are there certain sub-settings that it needs to have like mono sound only or similiar? I assume extensive packing is a no-no so the sound really plays to everyone and game understands the format. 3. I know you need to pack them up but can you play those just ambient_generic or does it have to involve a soundscape in some cases? I assume i can add them up just as i think but i would like to confirm it works like i think it will. I would also like to know if there are things i can avoid to encounter so i can save time without trial and error. Thanks.