I would get audiobooks of any unabridged Trek books.
Unabridged audios by Simon & Schuster Audioworks:
"Star Trek" by Alan Dean Foster, read by Zachary Quinto, 2009, approx. 480 min.
"Sarek" by AC Crispin, read by Nick Sullivan, 2012 (Re-release of 2001 Chivers/BBC version, now by S & S Audio via Audible Frontiers download), approx. 879 min. (Different to the Mark Lenard-narrated abridgement.)
"Star Trek Into Darkness" by Alan Dean Foster, read by Alice Eve, 2013, approx. 535 min.
There are also some (by comparison, very expensive) unabridged titles, not from Simon & Schuster Audioworks:
"Star Trek Nemesis" by J.M. Dillard, read by Grover Gardner, Chivers Sound Library/BBC Audiobooks America, 2002, 347 min. (Different to the Boyd Gaines-narrated abridgement.)
"Vulcan's Soul, Book 1: Exodus" by Josepha Sherman and Susan Shwartz, read by Richard Poe, Recorded Books, 2004, 510 min.
"Vulcan's Soul, Book 2: Exiles" by Josepha Sherman and Susan Shwartz, read by Richard Poe, Recorded Books, 2006, 630 min.
"Vulcan's Soul, Book 3: Epiphany" by Josepha Sherman and Susan Shwartz, read by Richard Poe, Recorded Books, 2007, 694 min.
http://therinofandor.blogspot.com.au/2007/05/i-hear-star-trek.html