Updating to version 1.0.1 of the wallet has taken care of the problem. You don't even have to resync the entire blockchain. Download the new wallet, install, wait a minute for it to update latest blocks, and my entire balance was there.
Thank you. That solved the problem for me too. Now it shows the correct balance and I can click send funds without the wallet being 100% synchronised with this version. I am continuing mining Musicoin for a week to see what amount of Btc will I have at the end of the week to confront it with mining ethereum and then decide which is better to mine.