Audio synching problems btwn players html

Having audio issues. What is the best way to publish a flash video for someone who doesnt have flash? still rather new to flash. i’m building a interactive flash video for power operated doors. It runs fine on my computer which has Flash cs3 installed on on it. swfs open in the stand alone adobe player perfectly. my problem is how the video runs on other computers. whats the best way to publish this. it needs to be easily accessible for people to watch? should i design and sync audio for each platform seperatly, html, swf…???
is the audio always going to vary from computer to computer??