Disabling MIDI Out (tx) to use pin 1 as a digital output

Hello,

I am working on a project that takes data from MIDI In (using the MIDI library). Ideally I'd like to use the other 19 pins on the Arduino as digital outs, however I'm not sure how to disable the tx pin used in serial communication (pin 1), while still being able to receive data from the rx pin (pin 0). I know in the MIDI library there is currently a way to disable the MIDI out functionality (though I get compile errors when I set this flag to zero--I think this is an issue that will be resolved in future updates). However since the library uses hardware serial for MIDI communication, I am wondering if this solution will merely block or ignore MIDI data output from pin 1, still preventing me from using this pin as a digital out. If that is the case, then does anyone know (or have an example) of how to re-write the hardware serial library to disable serial out (tx) while maintaining serial in? Is this even possible? Unfortunately the nature of my project wont allow me to simply switch to a Mega.

Thanks for your help!

Steve