Hi @perplexicon . I’m working on a Polymer3 web app Spoggy4 graph easy making and Reading
If you want the user send MP3 from his device to your Platform, this one has the ‘import’ functionnalities that uses a filebrowser to import files from localstorage into the app, so perharps no need to port solid-server to Android until you decide that the user must keep his crucial data ‘in the pocket’ as his crédit card, but it’s another question 
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You can already see what it looks like on Spoggy ( if nothing, wait 15sec & refresh)
