Copy and paste into layers is the way to go - you might also need "show active layer only" at times. It sounds tedious, but it actually goes pretty fast if you know the keyboard shortcuts for...

Do you have HP on ? HP does adjust the tempo during playback; if you turn it off I think the tempo should be exact (although I've never checked this). Fritz

So ? Define tuple 6 quarter notes in the space of 4, hide the number and bracket and you're done. Fritz

Did you compose the post with the strange formatting in another program and then copy and paste it into the browser perhaps ? There's lots of HTML formatting in it that you wouldn't have put in by...

RAM might be the problem, but save as audio doesn't involve the sound card or audio drivers since no sound is produced. You might look at this Knowledgebase article : Distortion or clipping in...