I've sent several audio files to Saturn and here's what I do:
1. You can find his e-mail address in his profile (just click on his name whereever he's posted and you'll find a link to the e-mail address)
2. Create your audiofiles in MP3 format
3. Attach files to e-mail addressed to Saturn and then send it to him.
I've been able to attach upwards of 3 MP3 files at a time with no problem. And as far as Saturn tells me, he's been able to receive all of my files without problem.
So, it should work for you, too, I'd guess
