Flashkit is a good place to find sounds, and as for music, you should just have a different track in each video. One that relates to what the movie's about. Trust me.
Looks great.
How original, a film marker and OMG as a film studio title. I have to honestly say its very cheesy and very nubby to use the word OMG.
And the marker has been in use for over 4 of your current life times!
No, thats not how classic works.