Different Decibel Level QT AIFF Files Played Tiger Vs. Leopard

Hi Gang
I still haven't found out why I get different decibel levels when created/played in a Tiger 10.4.11 environnment then played in a Leopard environnment. The levels are always about 1/2 the level when played in Leopard. These files could be AIFF exports within FC5, or could be any AIFF exported audio files created from Garage Band in Tiger then played in a Leopard environnment. Always 1/2 the volume level.
The QT Players are version 7.6.0
The AIFF files, are usually created at 41hz or 44hz at about 128-256 Bit Rate.
Thanx
Mike

I believe I found a partial answer to this
Thanx
Mike

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Problem solved, if not understood.
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Different Decibel Level QT AIFF Files Played Tiger Vs. Leopard

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