Feature Request: Add items to upload queue while uploads already running

[optoisolated]

Not sure if it's possible but it would be very handy to be able to add files to the upload queue while files are already uploading. Handy for assembling mix discs.

[asivery]

Unfortunately because of how the application is built, adding that functionality would be somewhat problematic, so I won't attempt it, but if anyone else would like to do it, please feel free to do it, and I'll merge it into WMDPro.