The best replacement for jplay is jriver.

The best alternatives to jplay are rated as following:
★★★★★  jriver
★★★★  foobar
★★★  amarra
★★★  foobar2000
★★  xxhighend
★★  audirvana
★  fidelizer
  cplay

Your alternative for jplay is not listed? Suggest!
Speaking about jplay, one probably shouldn't forget about jriver.

Other search terms related to jplay and their ratings are:
★★★★★ jriver
You have in mind a companion for jplay and it is not yet here? Propose!



Google Trends

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jplay
jriver
foobar