I'm running Windows 10 and am trying to connect my keyboard with midi using a Midisport 2x2. Whenever I connect the midi with the keyboard, my computer recognizes the device, but it doesn't recognize it as an audio input or output, just as a Midisport 2x2 audio device. When I try to use Music Creator 7, I have the same problem. The device shows up, but only as a midi, not as an audio input device.
I used this midi years ago with Windows 7 on Finale Songwriter and got it to work. I'm on a new computer now and have the latest Windows 10 drivers, but it's not working. I'm very new to this, so I could also just not be setting the midi up properly. I have the midi output of the keyboard connected to the input A on the midi and the usb line in connected to my computer.

Welcome to the forum!
A MIDI connector can not transmit audio data. There's no way a MIDI device can be recognised as an audio device, because MIDI includes no audio. If you want audio from your keyboard you must connect the keyboards audio out
to your soundcards audio in. There are versions where USB transmits audio, but AFAIK they are more like exceptions.
 
It may be you're referring to (with Finale) the MIDI being automatically played by the integrated MS Wavetable synth. This is the weakest possible solution, both regarding audio quality and workflow. MC 7 includes TTS-1 soft synth, doesn't it?
If it does, that's what you should use.

I'm trying to use it simply as a midi to input notes, but when I arm the midi track and try to input notes (with the midi selected as my input) nothing happens. If it shouldn't show up as an audio device, then am I doing something wrong?

Usually only one connection should be used, either the 5 pin DIN to the MIDISport or the USB to the PC. I have not seen a case where connecting both was suggested or recommended. That said, there is no mention which keyboard is in use.

I'm using a Yamaha YDP-223. The usb line I'm referring to is the one connecting the midi to the computer.

OK, try connecting the MIDISport to a USB2 port. I am not sure they support USB3. I do not have one to test.

I've been trying USB 2 and USB 3 ports and it doesn't make a difference. However, I just unplugged the midi with Music Creator 7 open and plugged it back in and let the program find an available input. It immediately crashed, but when I booted it back up, the midi worked. I'm not sure what happened, but at least it's working now.

that sound like a driver problem - especially since you are saying this is the first use in win10.

In my experience the MIDISport 2x2, both the anniversary and "ordinary" models, are rubbish for Windows later than XP. And even then weren't reliable.

They are very good at totally scrambling all kinds of MIDI messages and strange things can happen when they're used with any other MIDI interface hardware. I gave up on mine after it completely trashed several programmes on a DSI Mopho.

I've never got it to work remotely reliably under Win8 and have no idea how, or if, they work under Win10. MAudio are also one of the worst companies for producing drivers that work with Windows versions. I think the MIDISport Win7 driver was released something like two years after Win7 came out. Their forums used to be full of people complaining about driver issues and the lack of updated drivers.

Assuming you're not missing anything obvious in the MIDI routing, like the MIDI track and piano are on the same channel (an error we've all made more than once, or at least I have), then it might be worth trying a different MIDI interface. If you've an audio interface with MIDI in and out try that, otherwise MOTU seem to be well regarded and reliable, at least, I've no complaints about the MOTU unit I got to replace my MIDISport.