Is it the full paid version?
How did you transfer the material, project, source, etc. to the other PC?
Most likely cause is OE.
In Project Panel, do the MP3 files show as Media Off-line?
Can you get your Audio back with the Match Frame (Select your MP3, and place the CTI over it, then hit Ctrl-M)?
If not, if you Render/Replace, does that bring your Audio back?
Now a comment: MP3 is not a really good format to use. I always convert to PCM/WAV in Audition (except for tiny SFX MP3's), and have never had one issue. That conversion will NOT repair the tremendous loss in quality, that was incurred with the MP3 compression.
Yes it's the full version. I transferred the project by copying the contents from an external hard drive (with project file) to the internal drive of the new system.
Actually I corrected the music problem simply by moving the audio track from a3 to a1. Then I put it right back on a3 and it was still fine. I guess the software just needed to be jiggled a bit. But thanks for the tip on wav files, I think I'll do that and replace the mp3 files before it's all done.
The title problem is still there however. I guess I can reshape the titles but the project is a bit title heavy so it's slightly annoying. At least altering the titles can be done quickly and easily.
As far as the Titles, I can only think of one possibility - something has changed, regarding the Project's Frame Size, or the fixed Effect>Motion>Position got "jiggled" too. That behavior is odd, to say the least.