I just opened a song in Metro 6.2.5
The song was originally created with Metro 6.1 (actually recorded on an ADAT and transfered to MAC with Metro 6.1)
When I open the song with 6.2.5 it plays at an increased tempo and at a slightly higher pitch. I also tried 6.2.2, 6.2.3, & 6.2.4 and the same thing happens. I also noticed while watching the Graphic Editor window that the sound actually starts before the scroll bar reaches the grapic of what is playing.
I also noted that if I go back and open the same song in Metro 6.1 it plays at the correct speed and pitch.
I also think, but am less sure about this, that I didn't experience this problem prior to the 6.2.5 pre-release. That is, when I upgraded to 6.2 from 6.1 I could open files created with 6.1 and they would play properly in 6.2; But, now that I've upgraded to 6.2.5 even the earlier versions of 6.2 have become problematic.