I just added an album from my iTunes Music file to a Toast 6 window (in Leopard) and was unable to rearrange the songs with drag and drop.

Why don't you just go with Hal's advice, i.e. create a new playlist in iTunes, drag in your songs in the order you prefer, and burn with iTunes?

The new Great Equalizer is the SEND button.

In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire