Help with actionscript 1 to 2 convert error and swf sizing

Hello, I am kind of a newbie with flash, I only have some background on html and java. I made a website using a actionscript 1.0 template in cs5. I converted it to 2.0 and the mp3 player doesn’t work properly with more than one track it was playing all 3 at once. I got it to work with one track messing around with files and coding but the buttons don’t function properly. For example when I hit stop it will stop but then play button wont play track and the forward and back buttons don’t change the tracks.

My other issue is that after finishing my site I realized it wont upload to my host because it 18mb and the limit per file is 5mb. I read that there is a way to break it up into smaller files but I am unsure how to do this.

If anyone could help me I would really appriciate it