@Trekchick
I wasn't sure where to specify the type in the link so I tried this but no luck, does the syntax look wrong to you? I know this was just an off the cuff suggestion so it's quite possible that it just won't work but I thought I'd follow up
Code:
<a href="www.yourwebsite.com/ebooks/test.mobi" TYPE="application/octet-stream">Click here</a>