If you use windows, only worry about VSTI/VST/DXI/DX, if you use mac, tdm/AU. If you use proTools (on either platform), then you want RTAS. D!J!X! _____ From: ddots-l-bounce@xxxxxxxxxxxxx [mailto:ddots-l-bounce@xxxxxxxxxxxxx] On Behalf Of Berhane Kidane Sent: Tuesday, May 11, 2010 12:45 PM To: Dancingdots Subject: [ddots-l] TDM, RTAS and VST Hi folks, When I download softwares, I see those things; TDM, RTAS and VST. What is their purpose and what is the differences they have between them. Thank you, Berhane Kidane