QuickTime, which is used by HyperRESEARCH and HyperTRANSCRIBE for media playback, doesn't play Windows Media (WMA or WMV) natively. If you have files in these formats, there are several ways for you to proceed:
If you have not already made sound recordings in WMA format, check whether your digital recorder allows you a choice of formats.
If you're using Mac OS X, there is a QuickTime add-on called Flip4Mac that will let QuickTime play WMA and WMV files. (This add-on isn't available for Windows.) The download is available from Microsoft. Once you've downloaded Flip4Mac and installed it, all Quicktime-enabled applications will be able to use WMV and WMA - including HyperTRANSCRIBE and HyperRESEARCH.
If you already have recordings in WMA or WMV format, and you cannot use the Flip4Mac add-on, you can convert the files to another format that's compatible. There are many free or low-cost conversion programs available for both Mac OS X and Windows; you can find them by searching the web for phrases like "convert WMV files to MP3 on Windows".