With your goal being to have a demo set of songs for auditioning at stereo shops, do you have a PC with a disk drive? Then download DBPoweramp free version, or full version trial free for 21 days, and rip your CD tracks to Flac lossless files on your hard drive. Then upload the song files of your choice (still digital) to a thumb drive. Every Stereo shop worth considering will be able to upload and play your lossless Flac files for a demo.
For a very good, inexpensive intro into digital playback and streaming, Download Audirvana Studio Origin for $119 to stream all of your local digitized library from pc to your DAC. Or, subscribe to Audirvana Studio Classic for $6.99/ mo. to play not only your local files, but possibly add a high resolution streaming service, such as Qobuzz. ( a subscription to Qobuz is 13.99 - 20.00/ month). All subscriptions have a trial period.
Only thing else you will need is a cable from a digital out port on your PC with an SPDIF connection to your DAC.
Then, you can compare this basic streaming setup to your current CD system and decide next steps. I think you may be positively surprised. Good Luck!