Default Older Spotify APK

Over at Spotify's community it's clear their latest update 0.7.9 on the Play Store has a new 'feature' (audio ducking) that wasn't tested properly before release, and makes the app unusable for many. I won't bore you with the details of this, but has anyone got a pre-0.7.9 as an APK they backed up so I can sideload it and get things working again?
Nexus 4 & Nexus 7 (2012)
Both 16GB, stock, unrooted, updated OTA