The FLAC audio-encoding standard creates files in a high-quality, cross-platform format. If you have a concert recording or DJ set that comes in the form of multiple FLAC files, you can join the FLACs together to eliminate gaps between the songs. If you use Foobar2000 as your media player, you can join FLAC files using its interface. If you want more control over joining the FLACs, you can use the Audacity audio editor. If you're looking for one-click conversion, you may want to try the FLAC MP3 Converter.
Launch Foobar2000. Open the "File" menu and click "Add Files." Hold the "Ctrl" key and select all of the FLACs you want to join. Click "Open" to add them to your Foobar2000 library. Select the FLAC files in the playback window.
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Right-click one of the FLACs, move the mouse over "Convert," then click "Convert." Click "Output Format," then click the "Edit" button. Set the Encoder drop-down menu to "FLAC," then click "OK."
Click "Destination" and select the radio button next to "Merge all tracks into one output file." Click "Back," then click "Convert" to join the FLAC files together.
Launch Audacity. Open the File menu, hover the mouse over "Import" and select "Audio." Select all of the FLAC files you want to join and click "Open." Audacity imports the FLACs and places each waveform in its own track.
Click the "Time Shift Tool" icon, which looks like a horizontal line with an arrow on each end. Drag the second waveform to the right until its beginning aligns with the end of the first waveform; repeat the process for all of the FLACs.
Press "Ctrl" and "A" to select all of the tracks. Open the Tracks menu and click "Mix and Render." Click "File," then "Export." Set the Save As Type menu to "FLAC" and click "Save."
FLAC MP3 Converter
Download, install and launch the FLAC MP3 Converter. Click "Add Files," then hold the "Ctrl" key and click each of the FLAC files you want to join.
Click to select "To FLAC" from the Convert drop-down menu, then click the "Convert to One" button. FLAC MP3 Converter joins the FLACs into one file.
Right-click the joined FLAC file in the program window and select "Play Destination" to listen to it.