The best DVD+Rs (8X Taiyo Yuden) are only about $45 for 100. Plus there are even better deals for 2nd class media. www.supermediastore.com

Do you have a DVD-Audio capable player? You can burn about 7 hours of CD quality audio to DVD+R as DVD-A discs with DVD-Audiofile (free proggy): http://24bit.turtleside.com

Or if you only have a DVD-Video player you can burn audio only DVD-Video discs with this ($40):
http://www.audio-dvd-creator.com/
The only drawback is that you have to upsample 16/44.1 to 16/48 for DVD-V. You probably won't hear much difference between 16/44.1 and upsampled 16/44.1 > 16/48, if at all, esp. if you use a high quality resampler, like this free one:
http://www.voxengo.com/product/r8brain/
You can also burn 24/48 and 24/96 to DVD-V.

Or you can get a receiver with an optical and/or coaxial input, and get a soundcard with an optical and/or coaxial output, and run a cable from your comp to the receiver, playing back your FLACs with foobar2000. Or I think some receivers come with USB 2.0 inputs, so you could just run a USB from your comp to the receiver with no need to buy a new soundcard.

If you burn enough audio CDs, it's tough to find that one show to listen to, unless you sort them by date and band. You are counting on others to back up the shows as data so they can be reseeded at lossless torrent sites. Some of the new Denon receivers support FLAC, so maybe soon there will be DVD players that support FLAC playback. That would be perfect, you would have a playable disc for a standalone, and a data backup disc all in one.