I downloaded Alpha 2 and wanted to give some feedback here since my issue deals with this.
First off, I'm able to search, so when I long press on the album, I get results and can see album covers to select.
I read Max's response about the servers and the ability to actually download the covers, so I'll give that some time.
However, I'm still having a problem setting album art. I thought I'd do a test. I long pressed the album cover and pick from a couple of album covers
have saved in my gallery. When I do this, I still am not seeing the album art change. The images are ones that I use for other albums on my phone
so I know they aren't to big.
Phone: Samsung, Note 4, running Android 5.0.1