skrodahl wroteHi riquet78,
What you have done is to change the hostname locally on the Raspberry Pi. This is completely independent of reaching the Raspberry Pi from your network. The DNS name must be set on a DNS server.
It's not usual to run a DNS server at home in the traditional sense, luckily RuneAudio can present itself on the network through Bonjour/ZeroConf (actually avahi).
To change the name that RuneAudio presents to the network, go to "Menu" -> "Settings". From here, you can change the setting "Player hostname". Press the "APPLY SETTINGS"-button, and you're good to go.
Thanks for your response !
DHCP host entry was not sufficient.
Effectively DNS Server is the solution, i've juste installed and configure Bind and it works.
Nowadays, number of device is growing (thanks to raspberry Pi

)
and if we want to control internet access at home and have easier maintenance of all these devices, we need something to manage them !
A server@home with a DNS in this case is not so unusual
Thanks for your help
(And sorry for my english)