Add back in -D options to document whats available. Also, we need the WAV option.
Add back in -D options to document whats available. Also,
we need the WAV option.

mhartzel/sox_personal_fork,jacksonh/sox,Motiejus/sox,uklauer/sox,mhartzel/sox_personal_fork,uklauer/sox,uklauer/sox,Distrotech/sox,davel/sox,mhartzel/sox_personal_fork,davel/sox,Distrotech/sox,MageSlayer/sox,pcqpcq/sox,MageSlayer/sox,pcqpcq/sox,CaptainHayashi/sox,Motiejus/sox,CaptainHayashi/sox,pcqpcq/sox,cbagwell/sox,cbagwell/sox,Distrotech/sox,Motiejus/sox,cbagwell/sox,jacksonh/sox,jacksonh/sox,davel/sox,jacksonh/sox,MageSlayer/sox,Motiejus/sox,MageSlayer/sox,CaptainHayashi/sox,pcqpcq/sox,davel/sox,mhartzel/sox_personal_fork,CaptainHayashi/sox,Distrotech/sox,cbagwell/sox,uklauer/sox,MageSlayer/sox