Crowdsourcing advice

For those audiobook lovers out there:  At popular request, I am preparing an audio version of my book, Goal Play!  Leadership lessons from the soccer field.  My question is this:  On what platform(s) do you think it is best to offer the audiobook?  Is it Audible.com?  If you give them an exclusive, the audiobook is available on Amazon.com, Audible.com, and iTunes.com.  What other options are attractive to you?

Please offer your comments below.  Many thanks!