UserAgent: Mozilla/5.0 (X11; CrOS x86_64 7647.84.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.116 Safari/537.36
Platform: 7647.84.0 (Official Build) stable-channel swanky

Steps to reproduce the problem:
1. Play a mp3-File located on SD card
2. close lid
3. open lid again after about 10 seconds

What is the expected behavior?
The player resumes on playing the song

What went wrong?
The player shuts down and the SD cards becomes unmounted and remounted.

Did this work before? No 

Chrome version: 48.0.2564.116  Channel: stable
OS Version: 7647.84.0
Flash Version: Shockwave Flash 20.0 r0

The same thing seems to happen with an USB stick, but only by closing/opening the lid a second time shortly (ca. 3-5 seconds) after the first time.