Since that trip, I've been on a mission to find that music so I could play it when I needed the Disney magic/nostalgia. And I found it! Finally. It's only taken 7 years, but I finally found it! My husband came home from work the other night and I had the music playing and he said to me "I feel like I'm about to leave Disneyland for the evening, recapping the day...I like this." And I liked it too. So, I wanted to share it with all my Disney-loving friends.
Do a youtube search for "Disney Parks Loop Music." You're welcome. That's the best, clearest station I've found that plays all the music from Main Street to Splash Mountain to California Adventure and everything in between, including queue music.
And for other music that you might want to find (which I think you'll be able to find on Youtube, but just in case you don't) check out d-cot.net. Totally worth it!