How to change perl files of LMS in piCorePlayer

Hi everyone,

sorry if this was answered before - I could not find it using search.

I probably found a little problem in LMS (forum thread) and philippe_44 told me where I should make the change (/Slim/Networking/Async) in order to test it.

Could anyone help me how to write in /usr/local/slimserver/Slim/Networking/Async. Linux tells me that it is readonly.

Thanks!