Is there anything further you'd like me to do or try to check with this before merging? I don't know much about the implications, e.g. whether a newer version of the ALSA client library could be incompatible with an older ALSA driver.
I suspect that there's a smarter way of making it use the newly compiled library than just removing and replacing the old file, but I don't know what that is.
I've tested it (the 64-bit version) on my laptop, which runs Fedora 25. If alsa-lib is supposed to work with older ALSA drivers, I'd say let's just merge this and see how it goes - as you say, it will be much easier to test once it can be pip-installed.