I have found CreativeLIve for Music and Audio

This web site has several areas of free classes and training at CreativeLive.com. If you're inclined to try some of them come back here and let others know whether they are a good resource for Traveling ongoing Learners. I can see the videos right away, and they look good for anyone with W-Fi access while traveling or maybe pre-downloaded on a device with enough storage space. The scheduled classes would require synchronised free time I suppose, unless they record them live and store the recordings. There is some pure web text which would also be useful if you are in reading capable travel mode.