Sathya sai international organisation

Madhusudan Naidu's behaviour matches description of mental mediumship

Madhusudan Naidu claims to see and hear Sukshma Baba and then pass on the given messages to the recipients, either as a discourse or interview. This claim fits the description of a mental medium.
Madhusudan Naidu also makes a similar claim to George Anderson of being a 'radio transmitter' of messages—only he claims that they are from Sathya Sai Baba. In the book, Sri Sathya Sai Uvacha Volume 1, Madhusudan Naidu explains how to see and listen to the subtle form of Sukshma Baba almost identically to George Anderson's technique:

There are many radio stations like the All India radio, the London Radio, the American Radio and so on. Can you hear these songs without a radio? Not at all; a radio is required to capture the signals and convert the same into sound. But if you have to listen to a particular radio station, you have to tune the radio to that frequency. If the tuning is not precise, it will result in a lot of noise and no song can be heard. Similarly, mind is the radio. Swami is the song. If you wish to experience Swami, then your mind must be precisely tuned into Him.

Sri Sathya Sai Uvacha, Vol 1, p.9 or

https://saiuvacha.files.wordpress.com/2015/04/swami-in-subtle-form-faq-v2.pdf

Madhusudan Naidu is acting as an intermediary between Swami and His devotees

The Muddenahalli group claim that Madhusudan Naidu is not a medium because he only hears what Sukshma Baba says and communicates that to devotees and, therefore, he is a chosen 'communicator,' not a medium.
Regardless of the term, Madhusudan Naidu is acting as an intermediary between Swami and His devotees. Thus, it is a different term for the same function. The use of the alternative term, communicator, is to avoid appearing to be in conflict with Sathya Sai Baba's declaration that He does not use mediums or intermediaries to communicate His message and that He communicates directly, heart to heart.
Swami repeatedly warned devotees in discourses, interviews and through Sanathana Sarathi not to be taken in by those who claim that Swami is giving them messages for other people or in other ways acting as Swami's intermediary:

Then, there are some who proclaim that I am "coming upon someone" and speaking through them! They pretend to be My mouthpieces and communicate to others My advice and My suggestions, as if I have 'authorised' them or as if I am Myself telling so through them. Now hear this. I never speak through another; I never possess another or use another as a vehicle of expression. I come direct, I come straight, I come as I am, to confer peace and joy.

SSS 5.18: March 27, 1965, http://www.sssbpt.info/ssspeaks/volume05/sss05-18.pdf

Mr Narasimhamurthy passing on dream messages from Swami

Mr B N Narasimhamurthy, the leader of the Muddenahalli group, has been passing on claimed dream messages from Swami to devotees since July 2011. In the first dream message he emphasised that the message was from Swami in the subtle form and that these messages were important for devotees around the world:

Swami appeared in my dream in Brahmi (sic) Muhoortam last Sunday, July, 10, 2011. He gave me many instructions; some of them are very personal. I will share with you the ones that are relevant not only to you but to all the devotees around the world. Bhagavan had said on an earlier occasion, ‘I have three forms, one is gross form which confines to the Mandir I physically reside in, second is subtle form in which I pervade the entire ashram area I reside in (those days HE meant the Prashanthi Nilayam area) and the third is causal form by which I pervade the entire creation. Bhagavan appeared in His subtle form in my dream and this is what He told me, “Get the hill-top building ready for my stay before I arrive on this Guru Purnima day (15th July, 2011). On Guru Purnima day I will enter there and stay there permanently. I will go from here to different places and come back. But I will stay here permanently”….

Swami: ‘Also keep here one of the Cars I used.“

Then He said ‘lot of people have sacrificed their everything for the growth of this institution, their pictures also should be displayed here.

http://www.ssso.net/pnews-2011/pnews-jul11.htm
Sathya Sai Baba said that the messages that He gives in dreams or personal visitations are for the individual alone—they are not for others. Therefore, any claims such as, "Swami appeared in my dream or in front of me and gave me a message for you or for the rest of the world," are false as the person has interposed themselves between Swami and His devotees.

When I appear in a dream, it is to communicate something to the individual.

Sathyam Sivam Sundaram- Pt 4 Page 100, http://www.vahini.org/downloads/sathyamsivamsundaram-IV.html

Do not believe if any one comes to you and declares, "Sathya Sai Baba came to me in my dream and commissioned me to do publicity for him. Please help me as far as you can". I do not commission any one for such work, either in dream or while he is awake.

Such men are cheats; treat them as such, without mercy.

SSS 05.15: March 26, 1965, http://www.sssbpt.info/ssspeaks/volume05/sss05-16.pdf

People say 'Baba appeared to me in a dream and commanded me to do this and that, to you, to collect so much from you etc., etc. Do not give heed to such cheats; punish them in the way they deserve. That is the advice I have to give you.”

SSS 5.20: March 29, 1965, http://www.sssbpt.info/ssspeaks/volume05/sss05-20.pdf

Mr Narasimhamurthy's advice on intermediaries

Prior to leading the Muddenahalli group, Mr B N Narasimhamurthy, confirmed in his book, Sri Sathya Sai Divya Kripasraya, that Swami does not use intermediaries.
On being asked to act as an intermediary to convey a devotee's problem to Swami, while Swami was in the body, Mr Narasimhamurthy replied:

It is your problem: you have to tell him yourself. You know that Swami does not like any intermediaries between Him and His devotee. He has a special personal equation with every one of His devotees!

B N Narasimhamurthy, Sri Sathya Sai Divya Kripasraya, p.218