Comment # 1 on bug 95358 from Andy Furniss

FWIW I found an old build of 4.7-dal that did have sound - though it was early,
23rd March and I don't have any builds in between.

I see if I git reset --hard 4.5.0-rc7-g629edea (the version of that build)
I can get a new working build and seemingly git history from that time.

If I had more builds I guess I could narrow it down like that - but I don't and
I don't know how get the historic head versions from git - is that possible?