Salaams. SimplyIslam.sg, an Islamic educational outfit based in Singapore has an interesting Islamic song jukebox on their website. There are over 100 songs that you can listen to (but you can't download!). Artistes in SimplyIslam.sg's jukebox include familiar names like Sami Yusuf, Mesut Kurtis, Yusuf Islam, Muhammad al-Husayn and Seven8Six. There are other artistes that may not be familiar to many that are equally as good as well like Nowseeheart (Malaysia), Haddad Alwi (Indonesia), Snada (Indonesia), Quadravox (Indonesia), Imad (Malaysia), Dzul Rabull Jalil (Singapore) and others as well.
Have a listen, I'm sure you would not be disappointed. You can just leave the website on and the jukebox will autoplay (shuffling the songs), and you can listen to the wonderful songs while you are doing your work, at home or office.