Whether you want to make use of an old device or your existing one has amazing speakers, you can play audio from your PC or laptop through your Android smartphone or tablet. Whether its from Spotify, iTunes, Windows Media Player somewhere else.
It's fairly easy to set up, doesn't require any cables and you don't even need the latest version of Android for it to work.
The app is free but you can pay £2.50 for the full version if you want. "The free version of the application identifies itself by voice every 45 minutes and displays ads. There is a 10 minute compression trial in the free version. The full version enables unlimited Opus audio compression, can handle multiple clients (up to 10 connections), and has no ads or voice identification. It also has a special Pro Mode to set and display buffer latency precisely in milliseconds," explains GeorgieLabs.
How to use Android phone or tablet as PC speakers
Run both the app and the desktop server and they should automatically connect. For Wi-Fi, the two need to be on the same network.
Within the SoundWire Server on you PC and select the audio source. For Windows 7/8 the 'default multimedia device' should be fine while XP users should select 'stereo mix', 'wave out mix' or 'what u hear'. Linux users should follow the instructions in the README file.
Start playing the music or audio you want to hear from your Android device's speakers. Your computer can be muted and you can adjust the volume level with the master control within the SoundWire Server.