What is the easiest way to upload music I played on the piano in RL?

[Timotek]

I play the piano in RL and would like to share my music with my friends in SL. What is the easiest way to upload one of my music files into my inventory?

[KarenMichelle Lane]

You can't upload a full piano performance in any useful manner into your inventory. Sound clips are limited to 10 seconds each

You can however broadcast your complete performances via a relay service like DJs and live performers do.

There are relay service providers that allow you to upload up to 1 gb or more of music that will auto-play on your account. Then all you need to do it place that service URL & Port into your Parcel Sound field and all who come to your parcel will hear your performances. The fees for these services usually start at L$400/mo and go up from there.

I'm not allowed to post those providers here but you can find then easily enough in world or on the Market Place.

A more complicated solution involves you becoming your own broadcaster & relay service. That's out of the scope of my answer here but there are posts that will guide you through this process in the Forums.