I am trying to figure out if Music Maker 15 will work with Windows Vista x64(64bit), does anyone know the answer?? I have been successfully using V14 and V10 on Windows XP (32bit)
Music Maker 15 should work fine under either version of Vista. There aren't any specific limitations. Depending on what hardware you're using it's just more problematic to get the right drivers for the 64 bit version of Vista sometimes (in this context mostly the drivers for your audio hardware). However, this aspect is really crucial.
Why not check out the trial version of Music Maker 15 Premium and see for yourself? :-)