There are three sources I want to share, I hope these help.
The first source is one that I use every once in a while. You can access it at www.live365.com. Live 365 is an online radio station that has a great number of stations for each genre. It's free, unless you want the premium package, and its easy to use. They also display the name of the piece, and the name of the composer. The only set back are the commercials. There aren't many of them, but after a while they do irritate you. However, if you have time in your day, then check it out.
This other source is one that I use daily. 98.7 wfmt is a radio station that I often listen to when I'm working. It's a great radio station for the Chicago land area, and it's an affiliation of PBS. So those of you who are locals take some time out of your day to take a listen. Not only does this station provide great works from composers around the world, they also have information on music events like festivals and concerts, and NO COMMERCIALS. This station also has a website that has the info on the events at www.wfmt.com. And to those of you who are not local, you might be able to listen to the station on the website as well. So definitely check it out!
This next source is one that I often as well. Music Choice is a great source for any kind of music, from classical to reggae. You can listen to the wide variety of music on their website at www.musicchoice.com. And for those who have digital cable, Music Choice has channels provided by COMCAST specifically for listening. (channels 901-943) These channels are great for broadening your horizons in classical music. Not only do they provide the song, the name of the song, and the composer, they also give you interesting facts about them. I do recommend this source. Definitely check it out!
Those are all of the sources I've dug up, but I am determined to find more. So keep a look out!!