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myMPD
myMPD is a standalone and mobile friendly web mpd client with a tiny footprint and advanced features.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
I run two MPD instances and two instances of myMPD on a 2b, so it's definitely possible. I've never tinkered around with physical buttons and it's headless, but it certainly is capable enough.
NOTE:
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Hence, a higher number means a more popular project.