I’ve seen a few solutions for looking up albums/songs via MusicBrainz or Last.fm so you can send your listens manually to Last.fm via a mobile site, like:
There’s a manual addition option in the “Add listens” dropdown on your recent listens page. However, I’ve never used it before and it seems to only support adding one listen at a time. (The dialog is titled “Add Listens,” but doesn’t seem to allow adding multiple listens; either that or it’s broken for me.)
When I’m listening to my vinyls I submit them to Last.fm using Open Scrobbler, and sync with Last.fm. That makes it easy to submit the whole album in one click without fiddling with timestamps on every individual scrobble.
unfortunately, album listen submissions aren’t easily done (there is a ticket to make it a built-in feature tho). that said, it can also be done via Picard of all things, with the Submit to ListenBrainz plugin (forum thread here). that said, it might not be ideal (or maybe even possible) to haul your computer over to your reciever every time you listen to an album, lol