They voted to the delete the article. No-one added any reliable sources and the article was stripped for content by the same guy who nominated it for deletion.
The links on https://en.wikipedia.org/wiki/Wikipedia:Articles_for_deletion/Strawberry_(software) for "sources" points to "strawberry software", which obviously does not find much relevant for "Strawberry Music Player".
I think there are more references available than many other music players which has a wkipedia page, but I believe this is a result of the article being named incorrectly in the first place and lacking sources, no-one actually pointed to them in the time it was up for discussion.
