I just added some sound effects for piece captures and the gong sound when a game starts. Give them a try! Still looking for some background music.
Sound effects are from http://soundbible.com
Bite-SoundBible.com-2056759375--http://soundbible.com/950-Bite.html
License: Attribution 3.0 | Recorded by Mike Koenig
Boxing Punches-SoundBible.com-170770010--http://soundbible.com/177-Boxing-Punches.html
License: Attribution 3.0 | Recorded by Mike Koenig
Gut Punch Hook-SoundBible.com-390759846--http://soundbible.com/337-Gut-Punch-Hook.html
License: Attribution 3.0 | Recorded by Mike Koenig
Jab-SoundBible.com-1806727891--http://soundbible.com/995-Jab.html
License: Attribution 3.0 | Recorded by Mike Koenig
punch_or_whack_-Vladimir-403040765--http://soundbible.com/1952-Punch-Or-Whack.html
License: Public Domain | Recorded by Vladimir
Roundhouse Kick-SoundBible.com-1663225804--http://soundbible.com/1000-Roundhouse-Kick.html
License: Attribution 3.0 | Recorded by Mike Koenig
Slap-SoundMaster13-49669815--http://soundbible.com/1948-Slap.html
License: Public Domain | Recorded by SoundMaster13
Spin Kick-SoundBible.com-1263586030--http://soundbible.com/997-Spin-Kick.html
License: Attribution 3.0 | Recorded by Mike Koenig
Sweep Kick-SoundBible.com-808409893--http://soundbible.com/998-Sweep-Kick.html
License: Attribution 3.0 | Recorded by Mike Koenig
Upper Cut-SoundBible.com-1272257235--http://soundbible.com/993-Upper-Cut.html
License: Attribution 3.0 | Recorded by Mike Koenig
Metal Gong-SoundBible.com-1270479122
License: Attribution 3.0 | Recorded by Mike Koenig--http://soundbible.com/128-Metal-Gong.html