How to use WordPress to embed a SoundCloud download link?

As you may have already found out, presently, soundcloud do not allow modification of parameters with the HTML5 widget and only when using the flash player. See here for more info:
http://help.soundcloud.com/customer/portal/articles/241151-can-i-change-parameters-on-embedded-players-

The options for the flash player can be found here:
https://github.com/soundcloud/Widget-JS-API/wiki/widget-options

I hope this answers your question anyway.