What I'd do is this:
I'd record them as .wavs or .mp3's and then convert them to .wma's with MusicMatch or MediaPlayer, with DRM enabled. Some versions of MusicMatch can record via mic input too. You'd be creating the licenses on your own laptop.
Here's what MusicMatch's help file says about security:
Music Security
MusicMatch Jukebox uses an optional digital rights management system to help protect the copyrights of musicians and songwriters. This system, developed by Microsoft, encrypts the music files you record with MusicMatch Jukebox. Use of the system ensures that you don't accidentally violate copyright rules set forth by the music industry. The rights management system is turned on when you first use MusicMatch Jukebox, but may be turned off if you wish, since in compliance with copyright law, you may make copies of legally purchased recordings for personal, non-commercial use. You may want to turn off rights management if, for example, you need to access your music from more than one networked home PC, or if you want to move your music from home to work and back. To turn off rights management, please see the Recorder/Settings/Security panel under the Options menu in MusicMatch Jukebox.
Tom
