Kg1977 I think the best option here is to send you the raw files and fix of Bast’s voice so you can put it wherever you want to. I personally think it’s ruining the film in that position between Garindan and them walking in the Alley It’s clunky and it’s contradicting the plot.
The music won’t mix with Lukes theme that’s why that still image is there.
If the scene comes before the slaughtered Jawa’s, that then leads up to the scene after Cantina where Bast’s line to Vader now makes sense because Tarkin is being Coaxed by others around him to change tactics.
However I will send you the files when I sorted out the gap in the walking and then you can use it with whatever Vader voice Line you want also.
But give me a bit of time as I took a break from that scene for a bit. However I will send you those files and also some other resources you might like or find handy.