Consider changing audiobooks to 1 credit per month vs. limiting it by hours.

[ehelmrich]

I was really happy when I learned that Spotify included audiobooks in their monthly plans, but ever since I switched from Audible I get cut off due to your very limited # of hours per month. Audible gives you 1 credit (1 book) per month no matter the length. Being asked to pay $12.99 for 10 additional hours is CRAZY. I have 4 hours left in the book I was just cut off from finishing so that's $6 to finish a book? I'm likely going to cancel and switch back to Audible since this is just not user-friendly or affordable.  

[amg23]

I propose having one book allowed a month instead of a times cap of time to avoid being cutoff during a book and having to wait a period of time or spending extra money.