Okay, well to fix the sequence thing, I made a new project and a new sequence with Microsoft AVI, then I just imported my old sequence, copied all the clips and then pasted in the new sequence and then deleted the old one.
But being that I’m on windows now, the other problem I had was the audio since my footage was AVCHD. I couldn’t really find a fix so I just bit the bullet and converted all to MP4 and then re-linked all the footage.