Stop cutting that ugly foam and putting it between your strings on top of your headstock!
Gruvvgear made this amazing small piece that dampens the strings from ringing out.
Is it's for recording or for playing live, it's a must for both.
Also it's for guitar and basses!
If you use alot of gain or if you play clean but are using a guitar with a bigsby or an other trem, you always can hear the strings ringing out. Even without a trem so I can't recommend this Gruvvgear Fretwedge enough!
Installing is very easy, Just loosen the strings, put the fretwedge after the nut onto your headstock and fasten your strings.
The Fretwedge will automatically lock between your strings.