Regrettably for my purpose, the software requires that you add a "message on hold", which makes perfect sense for this devices intended purpose, if not for my own use. But I worked around the problem by recording a second of silence and then adjusted the software the effectively play only my cheesy elevator music.
AD Service Provider, On Hold Marketing, can put together a clear and concise customized phone greeting that conveys the professionalism of your company and lets the caller know how important their call is to you. Scriptwriters will educate and promote your business to on-hold callers through a custom-tailored message – letting everyone know what specifically makes your company different from others. This is your chance to share your background, insight and information about your business, promotions, and products and services to your captive audience. Recordings are available in English, French, Spanish, Mandarin and Cantonese.

In order to get started with custom on hold messages, you will need to determine your phones MOH (Messages On Hold) capability. If you’re using a traditional pbx business phone system, you’ll need an on hold media unit to play the audio. If you’re using an ipbx or hosted voip set-up then all you need to do is upload the audio file as no media device is required. And, if your a small/home office business using a traditional off-the-shelf 2-4 line telephone then you’ll need the media device and an on hold module adaptor in order to make your standard analog phones on hold message compatible.
Imagine a network of “connected” phone agents who are able to reach out to a colleague for help or advice in the middle of a phone conversation with an important client.