You can download a free copy of Finale NotePad to run on a PC or a Mac. This allows you to open up the ‘Finale File’ version of the sheet music I post. This allows you to hear the parts and practice along. You can even write your own pieces!
Get it here: http://www.finalemusic.com/products/finale-notepad/resources/
You can also get the Finale Songbook App for your iPad. This lets you listen to the different parts as well as letting you take your music with you anywhere you go!
Get it here: https://itunes.apple.com/us/app/finale-songbook/id529531809?ls=1&mt=8