can we get this opened up public Cassette cachedCassette { get; private set; } in RecorderTool
this way i can set the cassette with out  geting the sound of the insertion.

Yes, it's really easy to expose a field in Oxide. You can even do it yourself using the Oxide Patcher and submit a PR to the Oxide.Rust repository. Doing so is recommended, as it reduces the bottleneck on other volunteers who do not necessarily have time to fulfill all the needs of community members.

ya i would but where im at the net is so bad it takes me forever just to open umod lol.

This is exposed in the latest develop build.