I've been goofing around with squeezelite on the Raspberry Pi using piCore (piCorePlayer is good, just been doing it manually for fun). I know a lot of people don't like the default Squeezebox radio sounds but I kind of do and I thought it would be nice if the Pi would play a startup noise when it was up and running, so what better sounds to use than the actual SBR sounds? Not sure if these are available elsewhere but here's a link to a zip file with the .wavs and .mp3s I pulled off one of my SBRs earlier this evening:

https://www.strongspace.com/shared/xa55u1ouyg