Folders/files not seen in Bubble

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Hi

I am using minimserver with bubble as the control point. Got some music from a friend, and I notice even in folder view, the folders do not show up in bubble. On my windows pc they are shown as wav files. I thought maybe its a tagging issue, so tried to retag them in dbpoweramp batch converter, but the files are not shown there as well. The files are shown and play normally on my laptop. What could the reason for this be?

Thanks

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