Console messages from iTunes

The library is on the NAS drive. iTunes is resident on my Mac.

Additional information.

I do have access to my iTunes account from a windows PC. I also use iTunes match for iPhone, iPad etc.

ok I think I have resolved these messages.

I did two things.

1. Downloaded 9 purchased tracks that iTunes thought I did not have from the store. I did already have these on my Mac.

2. Logged out and back into the store.

No messages now for getting on for an hour so I think one of the above resolved.

I did think that this was solved but after 2 hours the messages have returned.

I get the following message set in console from iTunes every few minutes.

04/01/2015 10:35:41.077 iTunes[49859]: Entered:_AMMuxedDeviceDisconnected, mux-device:370

04/01/2015 10:35:41.077 iTunes[49859]: Entered:__thr_AMMuxedDeviceDisconnected, mux-device:370

04/01/2015 10:35:41.078 iTunes[49859]: tid:1897 - Mux ID not found in mapping dictionary

04/01/2015 10:35:41.078 iTunes[49859]: tid:1897 - Can't handle disconnect with invalid ecid

I am running iTunes on a Buffalo NAS drive which connects to my airport extreme.

Any clues as to what these are? Do i need to take action to resolve or should they be ignored?

Thanks

Rich.