Has anyone found a bluetooth transmitter that works? I'll be getting my new 70D in September (yippee!!) and I would like to use my old-school iPod - I have a ton of music in the apple format so it wouldn't be easy to transfer it all to a USB thumb drive. Nor would I like to have to purchase a new iPod touch. I haven't seen any past postings were they've successfully used a transmitter. Thanks in advance!