Private Lending Payments directing into Lender's Bank Account?

[Pete Sailhamer]

I bought a property using private money, and I would like to electronically send the monthly payments directly into the private lenders' bank accounts.  I would prefer not to use a third party site (ie Dwolla, etc) where they have to sign up for an account.  I just want the money to show up in their account, and make it as easy as possible for the lenders.  I have the account and routing numbers for each lender.

Any ideas on how to make this happen?