HEAVENS HELP!! WHY IS SONAR AUTOMATICALLY CHANGING MY TEMPO???

 
  Ok so I utilized session drummer to make a beat I also recorded with my keyboard through midi for piano portion of the song then I imported some audio tracks to complete the song I recorded my midi at a 58.00 tempo the audio files have been stretched to 58.00 tempo however when the beginning of the song plays its at 58.00 then in the middle it speeds up to 100.00 then back to 58.00 the only items that speed up is the beat I made with session drummer and my keyboard portion can someone please tell me how to fix this, its driving me crazy I have tried everything and nothing works HELP!! I have deadlines to meet!!!

No.... how does accidental tempo changes happen??

Could have come in with an imported clip if you had the box checked for tempo.  It is always a good idea to ALWAYS uncheck that box with any copy or import once you have set the overall tempo for the song or that can happen quite easily.   I just did it the other night but all I had to do to fix it was open up a previous saved version of the song and copy the tempo map back into the new version.   This was just another advantage of saving multiple versions of a project.