musictheory.net has an ear trainer, plus you can down load the entire program in case you wanted to put it on like a laptop that dosent have internet connections.
Good link! It has somewhat different and more varied ear trainers than musictheory.net, though it's not in flash and isn't as fast. I like the way this site is organized, they have a good selection of hearing exercises.
I am using it as well. If only there was a way to download it like with music theory. Bit of a case of being thrown in at the deep end with the MT.net one.
__________________
Got a phone call today to do a gig at a fire station. Went along. Turned out it was a bloody hoax.
Ear Training 
