Mac computers and tuning/tempering

Greetings,

I have an older Mac 660AV using only Quicktime 2.5. Is there a program for
making the Mac play a variety of tunings and temperaments?

Any help, including reference to archives or FAQs, greatly appreciated.
Many thanks in advance.

All best wishes,

Gordon Rumson


Canadian Pianist and Composer

Founder and Proprietor of Sikesdi Press
Music Publishers of the "New and Little Known"
Music by Sorabji, Johansen, Mellers, Flynn, ApIvor and others.
http://www.cadvision.com/Home_Pages/accounts/liszt/SikesdiPressWebpage.html