Fix : The NowPlaying elapsed time now resets back to 0:00 on resume
Fix album cover fetching
Case issue when removing disc references from albums (like CD1, disc02 ...)
Suppress warning about num going unused.

Suppress warning about num going unused, it's actually iterated and
apparently this warning is emitted, regardless.
Prevent resource leaks by closing record after use.

MessageOutputStream needs to be closed after use to prevent resource
leaks.
Prevent resource leaks by closing message after use.

MessageOutputStream needs to be closed after use. With that, the
appropriate IOExceptions need to be accounted for.