There are like 75 Star Trek novels on Audible .com, many of them qualify for your free book.
Almost every book is narrarated by Star Trek castmembers. Good stuff in there… check them out!!!
i wanted A Stitch in Time but Audible doesn’t have it
Happily, “A Stitch in Time” by Andrew J. Robinson (Garek), is available on Kindle.
I think most of them are abridged, which is kind of annoying.
Spock vs Q is on there though. Not really worth using a credit for since it’s only $6, but it’s funny as hell. Basically, it’s John De Lancie and Leonard Nimoy doing a 1 hour stand up routine as their characters. There’s a second one, but I didn’t like it as much.