Hi Graham,

Does that same file play in the new key, or original key, if you open it in Media Player instead of Sonar?

If it plays in the new key in Media Player and in the original key in Sonar, then Sonar is reading the Acid info and transposing the audio automatically.

I don't use Sonar, but the reply from BbAltered in this thread I found appears to explain how to turn off this transposition:

http://forum.cakewalk.com/Solved-Sonar-importing-audio-file-in-wrong-key-It39s-nuts-m3346407.aspx

Thanks
Kent
PG Music