Every musician's website should have one!  

See it in action here - https://audiomixer.io

This online audio mixer works in all recent browsers and on mobile devices, ideal for presenting your music beyond the usual stereo mix.  I use it on my site to show how I deliver my recordings.  The mixer is regularly updated, please keep in touch and share how you use it at twitter.com/pwhitfield or facebook.com/realstrings 

In exchange for a small donation (10 pounds/euros/dollars or whatever you can afford) I will send you the files you need to run the mixer on your own site.  The money you donate goes to Samaritans.

Read more about it here  https://realstrings.wordpress.com/2016/01/05/new-online-audio-mixer/

Donating through JustGiving is simple, fast and totally secure. Your details are safe with JustGiving – they’ll never sell them on or send unwanted emails. Once you donate, they’ll send your money directly to the charity. So it’s the most efficient way to donate – saving time and cutting costs for the charity.