I listen to all the J-Novel stuff with robot voice.
For the premium member Epubs, you can use EReader Prestigio on Android. You get 1 free Epub a month as a premium member, but can but
For the site on a desktop / laptop, there's a TTS extension in Chrome (PC version) you can download that's handy for listening to the site content. Actually two, but the other one pops up a window trying to get you to pay for the full version, and the default does not let you change voices. Both have their drawbacks currently (sometimes the former stops reading and you have to click the fast forward button to keep going).
I'd love to find an extension for my mobile phone browsers to read the web page if anyone knows of any. Most of the ones I've seen there require highlighting text or copying text.
This is another option for PC I have not tried.
http://ttsreader.com