FM Support was added to CyanogenMod. https://plus.google.com/+CyanogenMod/posts/hfX9jRUi7CL
Does the device in the Galaxy Tab 10.1 support FM?
Yeah, I am seeing this too. The app works fine but once you return to it after it has been in the background the 'now playing' view is missing the album art and the progress bar isn't moving, as you describe. If you leave it on that view for long enough (1 or 2 minutes) it does eventually come back to life though. Very annoying, especially as it is one of the main things I use the tab for.
If you find a fix could you please post back here?
For everyone that did not do a full wipe to flash the new gapps. The gallery2.apk is part of the ROM and was previously removed with the old gapps. The new one does not wipe out the camera, just uses the stock version. Since it was purged, you'll need to do a full wipe to get it back. Here is the original apk for those who just want to push it to /system/app and give it the permissions required.
If you still have artifacts using this apk, you need to wipe!
|4.2.1, cm10.1, jellybean, p4 p4wifi p4tmo p4vzw|